A storage battery of emf 8.0 V and internal resistance 0.5 Ω is being charged by a 120 V dc supply using a series resistor of 15.5 Ω. What is the terminal voltage of the battery during charging?

1. 11.5 V
2. 12 V
3. 13.3 V
4. 10 V

A secondary cell after long use has an emf of \(1.9\) V and a large internal resistance of \(380~\Omega\). What maximum current can be drawn from the cell?
1. \(0.05~\text{A}\)
2. \(0.005~\text{A}\)
3. \(5.0~\text{A}\)
4. \(0.5~\text{A}\)

The storage battery of a car has an emf of \(12\) V. If the internal resistance of the battery is \(0.4~\Omega\), what is the maximum current that can be drawn from the battery?
1. \(30\) A
2. \(20\) A
3. \(10\) A
4. \(40\) A

A battery of emf 10 V and internal resistance $3 \Omega$ is connected to a resistor. If the current in the circuit is 0.5 A, what is the terminal voltage of the battery when the circuit is closed?

1. 10 V
2. 8.5 V
3. 1.5 V
4. 7.2 V