Electric Circuits A parallel plate capacitor with air as dielectric, force between plate is F. If capacitor is now immersed water of dielectric εr, force between plate will be – F. εr/F. F εr. 0. F. εr/F. F εr. 0. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Emf induced in a coil rotating in a uniform magnetic field will be maximum when the rate of change of flux linkage is minimum. rate of change of flux linkage is maximum. rate of cutting flux by coil sides is minimum. flux linking with the coil is maximum. rate of change of flux linkage is minimum. rate of change of flux linkage is maximum. rate of cutting flux by coil sides is minimum. flux linking with the coil is maximum. 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? 1000 Hz. 100 Hz. 10 Hz. 1 Hz. 1000 Hz. 100 Hz. 10 Hz. 1 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Cells are connected in parallel in order to increase voltage rating. life of the cells. efficiency. current capacity. voltage rating. life of the cells. efficiency. current capacity. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is the relation between time period T and frequency? T = 0.85 / frequency. T = 0.5 / frequency. T = 1 / frequency. T = frequency. T = 0.85 / frequency. T = 0.5 / frequency. T = 1 / frequency. T = frequency. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A positive and a negative charged conductor are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be 25 times larger than before. 5 times greater than before. 10 times greater than before. 5 times smaller than before. 25 times larger than before. 5 times greater than before. 10 times greater than before. 5 times smaller than before. ANSWER DOWNLOAD EXAMIANS APP
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