Path of Less Resistance
Electricity and Magnetism
Level
3
When this circuit is connected to a certain voltage source, a current of \(21 \text{ mA} \) runs through it.
But when points \(A\) and \(B\) are connect by a wire, the current in the circuit increases to \(25 \text{ mA} \).
Determine the value of resistance \(R\) in ohms.
by
Arjen Vreugdenhil