Electric Circuits A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest? 10 Hz. 1000 Hz. 1 Hz. 100 Hz. 10 Hz. 1000 Hz. 1 Hz. 100 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The capacitive reactance of a capacitor of (1 / 2μF) F at 103 Hz is 10- 6 μF. 10 6 μF. 10 3 μF. 10- 3 μF. 10- 6 μF. 10 6 μF. 10 3 μF. 10- 3 μF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances? 1.5 Ω and 3 Ω. 6 Ω and 9 Ω. 3 Ω and 9 Ω. 3 Ω and 6 Ω. 1.5 Ω and 3 Ω. 6 Ω and 9 Ω. 3 Ω and 9 Ω. 3 Ω and 6 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 10Ω resistor is stretched to increase its length double. Its resistance will now be 40 Ω. 20 Ω. 5 Ω. 10 Ω. 40 Ω. 20 Ω. 5 Ω. 10 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is 22.4A. 14.14A. 17.3A . 30A. 22.4A. 14.14A. 17.3A . 30A. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The voltage across R and L in a series RL circuit are found to be 200 V and 150 V respectively the rms value of the voltage across the series combination is ______ V. 250 450 200 360 250 450 200 360 ANSWER DOWNLOAD EXAMIANS APP
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