David Sang and Graham Jones Solutions for Chapter: Electric Current, Potential Difference and Resistance, Exercise 3: Questions

The current in a circuit is $0.40 \mathrm{A}$. Calculate the charge that passes a point in the circuit in a period of $15 \mathrm{s}$

Calculate the current that gives a charge flow of $150\mathrm{C}$ in a time of $30 \mathrm{s}$.

In a circuit, a charge of $50 \mathrm{C}$ passes a point in $20 \mathrm{s}$. Calculate the current in the circuit.

A car battery is labelled $\text{'}50\mathrm{Ah}\text{'}$. This means that it can supply a current of $50 \mathrm{A}$ for one hour

(a) For how long could the battery supply a continuous current of 200 A needed to start the car?

A car battery is labelled $\text{'}50\mathrm{Ah}\text{'}$. This means that it can supply a current of $50 \mathrm{A}$ for one hour

(b) Calculate the charge that flows past a point in the circuit in this time.