A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance `'r'` carrying a current `i`. The resistance of voltmeter is `R`. For more correct measurement of potential difference

A voltmeter of resistance R is to be used to measure the potential difference across a resistance r . The nearest reading in the absence of voltmeter ?

Potentiometer is better for measuring the potential difference than the voltmeter because

Why voltmeter less accurate in measuring potential difference than a potentionmeter?

Potentiometer is better for measuring the potential difference than the voltmeter because :

For the measurement of potential difference, voltmeter is connected

For the measurement of potential difference, voltmeter is connected

A voltmeter of resistances 400(Omega) is used to measure the potential difference across the 100(Omega) resistor in the circuit shown in figure.(a) What will be the reading of the voltmeter ?(b) What was the potential difference across 100(Omega) before the voltmeter was connected ?

A voltmeter of resistances 400(Omega) is used to measure the potential difference across the 100(Omega) resistor in the circuit shown in figure.(a) What will be the reading of the voltmeter ?(b) What was the potential difference across 100(Omega) before the voltmeter was connected ?

A voltmeter of resistances 400(Omega) is used to measure the potential difference across the 100(Omega) resistor in the circuit shown in figure.(a) What will be the reading of the voltmeter ?(b) What was the potential difference across 100(Omega) before the voltmeter was connected ?