In the circuit, the potential difference across PQ will be nearest to
Potential difference across PQ i.e. p.d across the resistance of 20Ω, which is V=i×20 and i=48(100+100+80+20)=0.16 A ∴ V=0.16×20=3.2V.
In an LR circuit, the AC source has voltage 220 V and the potential difference across the inductance is 176 volt. The potential difference across the resistance will be