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# urgent help physics watch

1. A high resistance voltmeter records the potential difference across a battery which is connected to a variable resistor of resistance R,

The reading on the voltmeter, V, takes the following values: V=V𝟢 when R=R𝟢 and V=V𝟣 when R=R𝟣,

calculate the internal resistance r
2. (Original post by Rosy monaghan)
A high resistance voltmeter records the potential difference across a battery which is connected to a variable resistor of resistance R,

The reading on the voltmeter, V, takes the following values: V=V𝟢 when R=R𝟢 and V=V𝟣 when R=R𝟣,

calculate the internal resistance r
Not enough information. Worse, the information you did provide is ambiguous.

Without being given actual values of the voltage readings or the variable resistor values or the EMF of the battery, the question cannot be answered.

Soz.
3. https://isaacphysics.org/questions/f...9-b0920489817c

thats what I thought, this is where i got the question from

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