Find current in `6Omega` resistance and potential difference across each cell in circuit shown in figure-3.173.

Potential difference across AB in the circuit as shown in figure.

Potential difference across AB in the circuit as shown in figure.

Find the current in 4Omega resistance in circuit shown in figure-3.108.

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 ?