NEET 2021 Model Test Paper 6

The current in the circuit
I=

(20−10)

(7.5+0.5+1+1)

=1‌Amp
The potential difference across PS,
VPS=7.5×1=7.5V
The potential difference across QR,
VQR=1×1=1V
As point G is connected to earth hence potentials of R and S is zero.
The direction of the current in the circuit is from P to S, hence point P is at higher potential.
∴ VP=7.5V
Similarly VQ=–1V