Question

A resistance of 6 ohm is connected in series with another resistance of 4 ohm a potential difference of 20 volts is applied across the combination calculate the current through the circuit and the potential difference across the 6 ohm resistance

Answer 1

Total resistance=6+4=10 ohm (since they are connected in series)
Current across the circuit=20/10=2 amp(since current=P.D/total resistance)
PD across 6ohm resistor=6*2=12 volt