Thank you my dear please share the video

Thanks 🙏🙏🙏🙏 a million time. Your type make me want to do more. But, please don't forget to share this video and subscribe.

Thank you my dear. God bless you. Please share the videos

Thank you so much. Please always share the videos

You are welcome my dear

Yes, current and voltage have a direct relationship. And both will increase when either the current or voltage is the parameter being varied. But you have to note that it was the resistance that was being varied in the experiment. Resistance has an inverse relationship with current and a direct one with voltage. So, when resistance is being varied, you have to expect a decrease in current and an increase in the volt. I hope this answers your question.

Thanks 🙏🙏🙏🙏🙏

You can share the videos

Yes of course

Thanks just share the videos

Thanks my brother

Hahahaha

How can you say that

Thanks 🙏🙏🙏🙏

Keep sharing the video

Thanks my brother. We are in this together.

That is a very intelligent 🧠 question.

You can get a lead-acid accumulator of 2v

@@faithaderibigbe3647 ok thanks faith👍

Faith, u too dey write WAEC? Regards to Victoria and everyone.

I have to order for 2v accumulator for my school

Please help with alternative B

Just send the white paper. I will run it.

Alternative B. (Q1) * Half meter rule * Meter rule * Two knife edges both of equal height. * A string with a loop at each end * Set of masses(50g, 100g, 150g, 200g and 250g). * G- clamp * Stopwatch * Pair of vernier caliper (Q2) * pyrex beaker of volume about 250cm^3. * Lagged calorimeter of volume about 150cm^3. * Thermometer (-10^°C to 110^°C) * Block of metal of mass 100g whose specific heat capacity is known. *Measuring cylinder of about 250cm^3 * Supply of tap water * Bunsen burner * 50cm long string * Stopwatch/clock * Retort stand (Q3) * Potentiometer * Center zero galvanometer * Jockey * Key * 5 homs standard resistor labelled, R * Meter rule * About 120cm of bare nickel- chromium wire(swg 24) labelled, W * 2V accumulator or 2 dry cells (1.5V each) * Connecting wires * Rheostat *Voltmeter

Thanks in anticipation

How ?

Question 1. Half metre rule Metre rule Two knife edge of equal height A string with a loop at each end Set of masses (50g,100g,150g, 200g and 250g) G-clamp Stop watch Pair of vernier caliper Question 2 Pyrex beaker of volume about 250cm³ (any heating saucepan of the specified volume can be used) Lagged calorimeter of volume about 150cm³ with stirrer (calorimeter and storer of thesame material) Thermometer (-10⁰c to 110⁰c) Block of metal of mass 100g whose specific heat capacity is known. (High density metals such as copper, brads and steel are highly recommended so that the calorimeter can easily accommodate them) NB: the mass of the block should be recorded on a card for candidates ad mb Measuring cylinder capable of delivering at least 250cm³ Supply of tap water in a container Bunsen burner or source of heat Lighter/matches Napkin 50cm long string Stop watch/clock Retort stand and clamp. Question 3 Potentiometer Centre-zero galvanometer Jockey Crocodile clip attached to about 45cm of connecting wire Key/switch 5ohms standard resistor labelled, R Metre rule About 120cm of bare nickel-chromium wire (swg 24) labelled W (Any bare resistance wire of 5ohm per m may be suitable) 2v accumulator or 2 dry cells (1.5V each) connected in series Connecting wires Rheostat Voltmeter

Where did you see this abeg tell me.

@@vindalsacademy they brought it today from waec. It was Labelled B Alternative B The ones you did are alternative A. They brought it today

Thanks 🙏🙏🙏. Please share the videos that's the way to thank me. Okay. Enjoy

Go ahead my dear

Thanks 🙏🙏🙏🙏🙏

Yes but why don't we scratch is not to reduce the diameter of a part of the wire. So if I scratch very very gently. Will I cause any problem?

I am not a conventional person.

Thanks. Please share the videos

@@vindalsacademy i will

Pls sir i have a question, the values obtained from both optics and meter bridge experiment are meant to be the same values as yours right irrespective of equipment or does each meter bridge have different values ,cos unlike part 1 our values can't be the same because we're using different springs with different stiffnesses ,hw about part 2 and part 3

It's better we follow Thier instructions. Order for lead acid accumulator of 2V

Yes very important

The truth is there might actually be dormant apparatus

Alternate b are galvanometer

You weren't listening

Are you sure

Well the idea is to record the pd across the variable resistor

You didn't watch the video well. Maybe you can go back and watch full video

I did!! What i mean is would the question give us a certain amount of current we would vary our rheostat to find and then leave the rheostat in that position for the whole practical?

Yes. It would be stated. Using the Rheostat, set the current to .....Ampere. But we don't know yet. But we wait for them

Okay, thanks for the clarification.

I can send it across to you

@@vindalsacademy please how can I get this 2v accumulator and 1 ohm standard resistor?

Yes it's possible. They can come up with anything different from my demonstration

Sir How did you get l1 and l2

Which part of the video are you referring to let me know I will reply asap

Let's see how it goes but I will do many and prepare

I taught is for Alternative B

Well the truth is that. It is possible, maybe it will then function as ordinary wire or terminal. But, what I demonstrated was the principle of wheatstone bridge. Where you can use galvanometer to find the balance point inorder to measure the unknown resistor. I will still maintain that for the principle of wheatstone bridge a galvanometer is a must use.

You must understand what I intend to verify in this experiment. It is to confirm the resistor 1Ohm labelled R. Okay, no argument. Physics is clear. Is not an opinion, it's Practical

To me it's better we follow instructions

If you are teacher u can use 3v and filled the form with 3v instead of 2v

@@OYEREYI exactly my thought

Okay

Calm down you can slide. But not too hard.

@@vindalsacademy it is a precaution not to slide. Students can write it as precaution. So, you don't slide so as not to destroy the uniformity of the wire!

You can slide, or punch. But whatever you are doing. You should not be hard to the extent of affecting the wire.

I think I was talking about resistance. However, you can't connect voltmeter in series. It must be connected in parallel with the resistor. Also, since ammeter and voltmeter are moving inverse. It has a reason to think they don't agree. I know it's because of resistance. So please enjoy the video.

Pls the arrangement did not work when I tried it today. The connections works but when I remove one resistor from resistance box the voltage and current does not change and the galvanometer is only deflecting towards right and left of the scale whenever I slide the jockey on the bridge......pls what can I do ?

Check the connection of the keys of resistance box. Press the key to be tight. Use fuel and brush to clean some rusted parts. Brush it to remove rusted areas

@@vindalsacademy okay thanks, I will try and do that sir

Yes, you are right according to ohms law current and voltage are directly proportional but his values are actually correct because what is been varied is the resistance. So the values are correct with respect to resistance, cause voltage is directly proportional to resisrance and current is inversely proportional to resistance

How can you use metre-bridge without galvanometer. You people don't pay attention to video before commenting

@@vindalsacademy Metre Bridge will not be used during the practical

Not all apparatus waec send would be used😊

I have tried this, we can use it without Galvonameter

Really. Maybe you can teach me

You did watch the video to the end

Tell me how to use metre-bridge without galvanometer.

Just trying to confuse the student, with meter bridge,is not actually coming in the practical,I guess, they are going funny this days,all there question for the essay today was applied question,so we must not complicate ourselves here.

You should be kind. I am following instructions