engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Physics Electromagnetic Oscillations and Alternating Current Alternating Current
An alternating voltage source of variable angular frequency ‘w’ and fixed amplitude. ‘V’ is connected in series with a capacitance C and electric bulb of resistance R (inductance zero). When ‘w’ is increased-
1
The bulb glows dimmer.
2
The bulb glows brighter.
3
Net impedance of the circuit remains unchanged.
4
Total impedance of the circuit increases.