Question

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4 Ω resistors? Give reason.

Answer 1

Yes, the potential difference across the 2 Ω resistor will be the same as that across the parallel combination of 4 Ω resistors because net resistance of parallel combination

= `(4 xx 4)/(4 + 4)`

= 2 Ω

and current across 2 Ω and parallel combination is the same.