Electric Circuits A piece of copper and another piece of germanium are cooled from room temperature to 80K. The resistance of each of them increases. copper decreases and germanium increases. copper increases and germanium decreases. each of them decreases. each of them increases. copper decreases and germanium increases. copper increases and germanium decreases. each of them decreases. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits In which of the circuits power factor can be zero? both ‘a’ and ‘b’ resistive. inductive. capacitive. both ‘a’ and ‘b’ resistive. inductive. capacitive. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Ampere second is the unit of energy. conductance. power. charge. energy. conductance. power. charge. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 10 μF capacitor and 100 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow brightest? 100 Hz. 1 Hz. 1000 Hz. 10 Hz. 100 Hz. 1 Hz. 1000 Hz. 10 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V. 8 50 2 36 8 50 2 36 ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following elements is/are called dynamic element/s? R. C. L. Both L and C. R. C. L. Both L and C. ANSWER DOWNLOAD EXAMIANS APP
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