Electric Circuits There are two capacitors C1 and C2 in parallel , what will be their equivalent capacitance? (C1C2) / C1 + C2. C1C2. C1 + C2. (C1 + C2) / C1C2. (C1C2) / C1 + C2. C1C2. C1 + C2. (C1 + C2) / C1C2. ANSWER DOWNLOAD EXAMIANS APP
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? 1 Hz. 100 Hz. 10 Hz. 1000 Hz. 1 Hz. 100 Hz. 10 Hz. 1000 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits When AC flows through a pure capacitance then the current leads the emf by - 90o. leads the emf by 90o. lags the emf by 90o. is in phase with emf. leads the emf by - 90o. leads the emf by 90o. lags the emf by 90o. is in phase with emf. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be 0.001 μF. 0.01 μF. 1 μF. 0.1 μF. 0.001 μF. 0.01 μF. 1 μF. 0.1 μF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will increase. decrease. none of these. remain constant. increase. decrease. none of these. remain constant. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The resistance of 200 W, 200 V lamp is 800 Ω. 100 Ω. 400 Ω. 200 Ω. 800 Ω. 100 Ω. 400 Ω. 200 Ω. ANSWER DOWNLOAD EXAMIANS APP
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