Sir ji 🔥🔥

बहुत informative video sir,बचपन से आज तक यही सोचते थे की काम कैसा करता है। आपकी वीडियो के माध्यम से ज्ञान आया।।। बहुत बहुत धन्यवाद सर।।। जय हिंद,जय भारत।।।।।।

Salute to you sir... I am a electronics engineer, I remembered and learnt all this again. 😊😅 Thanks you

पंकज सर जैसा सार मैंने अभी तक नहीं देखा जो इतनी अच्छी तरह से समझ देते हैं पंकज सर सर्वश्रेष्ठ हैं सर है सर एक बात अच्छी तरह से समझ देते हैं जो हमें अच्छे से समझ आ जाते हैं ❤❤❤❤🎉🎉🎉❤❤❤

Best physics teacher india's number 1 .

सर जी आपके स्तर का विज्ञान का ज्ञान हासिल करने के लिए खान सर को शुरू से हाईस्कूल से लेकर BSc, MSc, PHD in Science & Bed इसके बाद ही एक अनुभवी विज्ञान शिक्षक कहलाएंगे ।। यहां तक पहुंचने को खान सर को फिर से जन्म लेना पड़ेगा ।।

I am 35 years old.par abhi bhi jab aap ka video milta hai to fir se padai me man lag jata hai. Awesome Sir Ji

Pankaj Sir is a very honest, transparent and virtuous gentleman !!! May God bless you and your family forever 🙏❤🙏

Mai electrical ka kaam karta hu aur aap ki video itni informative hoti hai ki dekhate huye skip karne ka bhi man nhi. Karta aur aap ke samjhane ka tarika to gajab

This is a commendable style of knowledge sharing along with simultaneous doubt clearing technique. साधुवाद। गुरवे नमः।🙏

Very useful knowledgeble video congratulations

Complete solar system working best videoes

Sir aap hi sahi hi aap itni mahant karte ho

मेरा मानना है कि पंकज सर फिजिक्स के लिए बहुत ही बेहतरीन शिक्षक हैं। ❤

Sir I am an Aeronautical Engineer. Its an excellent way of teaching. Thanks

सर आप बहुत अच्छा पढ़ाते आप से कमजोर बच्चा भी पढ़कर सीख सकता है आप छोटी-छोटी चीजों से लेकर बड़ी चीजें भी बताते हैं

Very informative video.. sir ❤1:18:01

Mazaa aa gaya mujhe poora video dekhker, waah

Sir main aapki video ka intezar kar raha tha 😊😊😊

Sir You are real teacher Thanks ❤

Sir यूट्यूब में एक वीडियो देखा है यदि एक सुई को अंतरिक्ष से प्रकाश की चाल से पृथ्वी पर गिराया जाय तो यह कई परमाणु बम ब्लास्ट से ज्यादा खतरनाक होगी। कृपया इस पर एक शॉर्ट वीडियो बनाकर जानकारी दें। धन्यवाद 🙏🙏🙏🙏

हृदय प्रफुल्लित कर दिया आपने सर। कोटि कोटि नमन है आपको...।

Bahut acha bataye sir thanku so much sir 😊😊😊😊😊

Bahut chize taja ho gyin nice session

इस टॉपिक को समझने के लिए आज तक न जाने कितने प्रयास किए गए थे हमसे लेकिन नही समझ पाए अब जाके आपसे इस टॉपिक को हम अच्छे से समझ पाए आपका बहुत बहुत धन्यवाद sir ❤❤ 🙏🙏

Pankaj sir Science mai toper hai.. Khan sir science mai pankaj sir ke barabar knowledge nahi hai.

ऊं जय सरस्वतै: नमः गुरुजी की जय हो ❤❤❤❤❤

06:30 - The flow of electrons begins at the cathode (negative electrode), while the flow of electricity initiates at the anode (positive electrode). 25:00 - Explanation of n-type and p-type semiconductors. 26:00 - SILICON's classification in Group 14 of the periodic table and its significance as a metalloid used widely in electronics due to its semiconductor properties. 40:00 - Details about n-type and p-type semiconductors, their creation, and the behavior of charge carriers within each type. 46:36 - The concept of the depletion layer in a semiconductor junction and its impact on electrical current flow. 51:15 - Relationship between electric field, voltage, and distance described with an equation. 55:33 - Explanation of reverse bias in a p-n junction and its effects on the depletion layer and current flow. 1:01:01 - Overview of different types of photoelectric cells, their operations, and applications. 1:07:07 - Planck's equation defining the energy of a photon and its significance in quantum mechanics. 1:08:25 - Explanation of current flow in a p-n junction diode under forward bias. 1:09:00 - Description of how solar cells generate electricity and the role of external circuits in facilitating charge movement. 1:11:11 - Details about the photogeneration of charge carriers in solar cells and their movement in response to sunlight. 1:16:16 - Description of the depletion layer's function in a solar cell and its impact on charge carrier movement. 1:18:18 - Locking safety measures for home use.

I am from Nepal and I love your teaching style sir

Sir, my age is 55yrs . I am mechanical engineer. But I had dream to learn electrical engineering and I started learning through your videos. I have started making notes . The best part I like the most is free electron flows from cathode , which is negatively charged. Because students don't know how charge flows. Explanation towards solar cell excellent. Simple and we will never forget. Sir, I have one doubt. Can we see electron with help of any equipment.

Very informative,thank you sir.

00:35 sir padhta ho Kamal ka aab Jadu bhi maja aa gaya.... Sir aapki videos isliye Mane aapke channel ki starting se dekha raha hu.....

Very good explanations for pn junction,diode , photovoltaic cells, practical applications.keep making such informative videos. You are a great teacher of physics.

खान को किसी भी subject का deep knowledge नहीं है/पंकज सर महान हैं/

खान sir पर पंकज sir का एक वार.... पंकज sir के सब्सक्राइबर one मिलियन पार 😊😊😊 great सर... 👍🏻👍🏻👍🏻👌🏻

26:00 SILICON belongs to Group 14 in the periodic table. Group 14 elements are also known as the Carbon Group and include elements like carbon C silicon Si germanium Ge tin Sn and lead Pb. These elements share similar chemical properties, particularly in their outer electron configuration. Silicon, specifically, is a metalloid element that is commonly used in electronics and various industrial applications due to its semiconductor properties. For elements in the main groups Group 1 to 18 excluding the transition metals the last digit of group number may corresponds to the number of valence electrons. For instance Elements in Group 1 e.g. Hydrogen, Lithium, Sodium have 1 valence electron. Elements in Group 14 e.g. Carbon, Silicon, Germanium have 4 valence electrons. Elements in Group 17 e.g. Fluorine, Chlorine, Bromine have 7 valence electrons. This pattern continues until Group 18 Noble Gases where elements have full valence shells making them stable with the maximum number of valence electrons.

Sir ji your great ❤❤❤❤❤❤

Excellent explanation

1:16:16 Depletion Layer in a Solar Cell--- Creation of Depletion Region--- Within a solar cell, the p-n junction forms a depletion region or layer. This layer is created due to the diffusion of charge carriers (electrons and holes) across the junction, leading to the establishment of an electric field. Function of the Depletion Layer--- The depletion layer acts as a barrier to the free movement of charge carriers. When the solar cell is not illuminated or under reverse bias, this region prevents the significant flow of current. Upon Illumination--- When sunlight strikes the solar cell, photons are absorbed, generating electron-hole pairs within the semiconductor material. These pairs are created primarily in the region close to the depletion layer. Charge Carrier Separation--- The electric field in the depletion layer separates the generated electron-hole pairs, causing electrons to move toward the n-side and holes toward the p-side of the junction. Assistance in Charge Collection--- The depletion layer facilitates the separation and movement of charge carriers in opposite directions. Forward bias applied across the cell helps in reducing the barrier of the depletion layer, enabling the separated charges to move more freely towards the respective terminals. Electricity Generation--- As explained earlier, the movement of these charge carriers in response to the electric field across the forward-biased p-n junction results in the generation of an electric current, which can be utilized to power external devices or circuits. The depletion layer's role is critical in the operation of a solar cell, particularly in facilitating the separation and movement of charge carriers generated by incident photons, contributing significantly to the conversion of solar energy into electrical energy.

Very good sir Jankari bahut achhi hai

ASI hi video dekh kar mai apse bar bar request krta hu sir ki beginners ke liye physics class start kijiye. Chahe week Mai ek hi class

Bah sirji ap to adhbhut hae😊

Jalwa hai hamare Gurudev ji ka 🎉🎉

Sir , u r great.Tks for sharing.

sidha gyan no bakwas khan sir ke tarah.. aap bahut gyan i ho sir... i love you 💓

Pankaj sir ko bahut deep knowledge hai। Great sir thanks 🙏

Aakhir kar pura dekh hi liya ......😊😊😊

Very very thanks sir ji 😊🙏🏼

बहुत अच्छा sir ji

Shandaar sir bahut badhiya bahut kuch sikhne ko mila apse

अति सुंदर सर जी 🙏🙏🙏

29:00 To create an n-type semiconductor, mix a 14th-group element Si with 15th-group element Antimony Sb Atomic Number 51 p-block Mass 121.760 as impurity

Teacher is always legend 🎉🎉🎉🎉🔥🔥🔥🔥

❤❤❤❤ Namaste sir Jo man me shawal the aapane to use bhi bata diya. Ek Dam clear hai.

Salute Yaar ... You Are A Good Teacher ... You Explains Very Well...

बहुत अच्छी जानकारी मिलीं सर, ❤❤❤❤❤❤

Thanks sir bahut achchhi jankari hai

Sir aap bahut achha nolege dete ho.😊 esi tarah padhane se hamara desh bahot aage badhega 🥰😃

❤You are Grate sir❤

Pankaj sir physics ko bahut interesting bana dete hain

बहुत शानदार पढ़ते हैं सर आप Sab समझ में आती है I really like you

We love you sir ji ❤👌👌👍👏Ese guru ji ko mera naman hai quality of education this quality of education is Bharat in need sir ❤

Aap best ho sir ji

Great sir, u have changed the concept of understanding science and technology

अति उत्तम जानकारी भैया जी 🕉️🙏🕉️

U are great sir... Bhot acha padate h ap....

Bhut sundar Panka sir

Bahut accha guru ji

Sir ki videos dekh ke Maine bhi apna educational channel bnaya 3 din pehle.....your teaching strategies is 😮😮

Kindly copy and paste following in description of this video:- 06:30 - Electrons start flowing at the Negative electrode (cathode), while Electricity starts flowing at the Positive electrode (anode). 25:00 - Discusses the differences between n-type and p-type semiconductors. 26:00 - SILICON, a Group 14 element, is a widely used metalloid in electronics due to its semiconductor properties. Group 14 elements share similar chemical traits and have 4 valence electrons. 36:00 - Describes a 'hole' as an empty space in a covalent bond that an electron can fill. In intrinsic semiconductors like silicon, holes are created when electrons break free from covalent bonds due to external influence or thermal energy. 46:36 - Explains the depletion layer formed at the junction of differently doped semiconductors, influencing charge carrier movement and impeding easy current flow. 51:15 - Introduces the relationship between electric field, voltage, and distance, depicting their direct and inverse proportionalities. 55:33 - Discusses reverse bias in a p-n junction, where an external voltage opposes natural charge carrier movement, leading to expanded depletion layers and reduced current flow. 1:01:01 - Differentiates Photoemissive, Photoconductive, and Photovoltaic cells, explaining their operations and applications based on their response to light. 1:07:07 - Planck's equation relates a photon's energy to its frequency, contributing to the understanding of light's quantum nature and its impact on quantum mechanics. 1:08:25 - Details how forward bias in a p-n junction diode facilitates the movement of charge carriers, enabling electric current flow. 1:09:00 - Explains how solar cells convert light energy into electricity through the movement of charge carriers under the influence of an electric field and forward bias. 1:11:11 - Describes photogeneration of charge carriers in solar cells, emphasizing the role of photon absorption and the subsequent movement of electrons and holes. 1:16:16 - Discusses the depletion layer's role in solar cells, including its creation, function as a barrier, and assistance in charge separation to generate electricity. 1:18:18 - Locker Safety at Home

33:33 To create an p-type semiconductor, mix a 14th-group element Si with 13th-group element

Great Sir 🙏❤️

Bahut badiya sir

Sir asa he video lathe raha sir 😊😊

My favourite teacher Pankaj sir

Thanks sir Bharat mata ki seva.

Sir u are God of teaching physics

जय गुरु❤🙏🙏🙏 सर आपके समझाने के तरीका बहुत अच्छा लगा 👍👍👍👍

A legendary teacher ❤

Hats off to you Sir for this informative video on solar cell! 👏👏🙏

Great sir

Thank you sir aapne bahut achchhe se samjhaya

Sir bahut AXA samjh m aya

Pahali bar KZfaq aisa teacher mile hain jo itani practicaly theati teach kar rahe hai

Love you Pankaj sir 🎉 ❤️❤️

सर में इलेक्ट्रॉनिक की फील्ड से हूं और जब बेसिक इलेक्ट्रॉनिक्स पढ़ा था तब हमने सेमीकंडक्टर में अशुद्ध मिलकर दाता और अडॉप्टर पद्धति से उनको नेगेटिव और पॉजिटिव टाइप में कैसे कन्वर्ट करते हैं यह सब सीखा था और इसी पद्धति से डायोड ट्रांजिस्टर वगैरा कैसे बनते हैं यह सब भी सीखना लेकिन आपने बहुत अच्छा समझाया देखकर मजा आ गया जानते हुए भी आपके वीडियो को लाइक करके जा रहा हूं

Thankyou sir

Both teacher's are best ❤ Hame ek hona h sir aalag nahi .. Proud we are Indians 🇮🇳

Thanks sir maja aa gaya ❤❤❤❤❤❤❤❤

Welldon Dear Sir . ❤❤❤

Pankaj Sir is a great teacher 😊

Very informative learning

Bahut accha laga Sir. Mujhe physics bahut lagti

Fantastic sir ❤❤❤❤😊

Amazing maza aa gaya sir g

Wow nice sir ji ❤❤❤❤❤❤

Very informative vedio

Love you sir ❤❤❤ Amazing, next lable class

great sir ji

Great sir✨