The expected answers were:
- Ohm’s law states that the potential difference across two points of a circuit is proportional to the current produced provided the temperature is kept constant.
- The phasor diagram required is:
- (i) V = IR
R = = 100 Ω
(ii) Power = I2R = VI =
P = 2.42 x 100 = 240 x 2.4 = = 576 W
The question was on Direct Current Circuit Theory. It was well attempted by candidates. Many candidates encountered some challenge with the phasor diagram.