2016 Official AQA New Spec AS Level Physics Paper 1 - 24th of May 2016

I put the following, or something along these lines.

As the emf across the circuit is equal to sum of the emf of the individual components, then by replacing the battery with a with one of the same emf, but internal resistance, the voltmeter would read the same value.

(Cant actually remember what the question was, if you remind me I can write what I actually answered)

What did people get for the last electricity where the battery had internal r

I put the following, or something along these lines.

As the emf across the circuit is equal to sum of the emf of the individual components, then by replacing the battery with a with one of the same emf, but internal resistance, the voltmeter would read the same value.

Do you mean the one where you had to work out of one of the resistors? Like 0.15 I think. Or the voltmeter one, where I said that the resistor is in parallel and the reciprocal of a big number is very small and so it would have little difference

Was there multiple choice for this paper???

Question was
1.5v battery is replaced with one with significant internal resistance. explain why the value on the voltmemter at A and B doesnt change

No thats paper 2. Which one do you reckon will have higher boundaries

I put that the internal resistance would reduce the terminal potential difference but the potential difference between the two points would be the same as the external arrangement of the resistances is the same therefore the voltage across each component will be less but the difference between A and B the same

I put that the internal resistance would reduce the terminal potential difference but the potential difference between the two points would be the same as the external arrangement of the resistances is the same therefore the voltage across each component will be less but the difference between A and B the same

I put that the internal resistance would reduce the terminal potential difference but the potential difference between the two points would be the same as the external arrangement of the resistances is the same therefore the voltage across each component will be less but the difference between A and B the same

where da unofficial markscheme

damn, i said the voltage would just be zero because it's in parallel with no components. But, wouldnt the voltmeter not record the emf as its not in paralel with the cell

The question asked why the volmeter would read the same.

Guys what did you pick for the meterial of the wires?

I picked BC

What did people get for the percentage change in diameter. Did anyone get 0.79%

Yeah, zero before with no internal r,zero after with Ir

Was it one sig fig or 2 i first had 0.875 then put it to 0.90