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. 100 Hz. 1 Hz. 10 Hz. 1000 Hz. 100 Hz. 1 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 60 Hz frequency voltage would cause a bulb to turn on and off 120 times per second. 80 times per second. 60 times per second. 70 times per second. 120 times per second. 80 times per second. 60 times per second. 70 times per second. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following has positive temperature coefficient ? Gold. Rubber. Paper. Germanium. Gold. Rubber. Paper. Germanium. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the followings is/are active element? Voltage source Current source Both None of these. Voltage source Current source Both None of these. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The absolute charge of an electron is none of above. + 1.6 × 10-19 C. 1.6 × 10-19 C. - 1.6 × 10-19 C. none of above. + 1.6 × 10-19 C. 1.6 × 10-19 C. - 1.6 × 10-19 C. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits For occurrence of resonance which of the following elements are required? Both 2 and 3 C R L Both 2 and 3 C R L ANSWER DOWNLOAD EXAMIANS APP