A secondary cell, after long use, has an emf of \(1.9~\text{V}\) 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 \(12~\text V.\) If the internal resistance of the battery is \(0.4~\Omega,\) what is the maximum current that can be drawn from the battery?
1. \(30~\text A\)
2. \(20~\text A\)
3. \(10~\text A\)
4. \(40~\text A\)
A battery of emf \(10 ~\text V\) and internal resistance \(3~\Omega\)
1. \(10~\text V\)
2. \(8.5~\text V\)
3. \(1.5~\text V\)
4. \(7.2~\text V\)