Electric Circuits A external resistance R is connected to a cell of internal resistance r, then the current is maximum when R > r. R = r. None of these R < r. R > r. R = r. None of these R < r. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If a capacitors of capacitance 100 μF is connected across a voltage source of 10 V, then what will be the energy stored in that capacitor? 5 × 10 - 3 Joule. 10 × 10 - 3 Joule. 10 × 10 6 Joule. 5 × 10 - 2 Joule. 5 × 10 - 3 Joule. 10 × 10 - 3 Joule. 10 × 10 6 Joule. 5 × 10 - 2 Joule. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is 0.4. 0.85. 10. 1. 0.4. 0.85. 10. 1. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is 1. 4. 1/4. 16. 1. 4. 1/4. 16. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Two point charges of 4μC are placed at a distance of 3 cm apart from each other in free space. Force acting on two charges will be 400 N 100 N 160 N 0.02 N 400 N 100 N 160 N 0.02 N ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be 4 Ω. 400 Ω. 40 Ω. 800 Ω. 4 Ω. 400 Ω. 40 Ω. 800 Ω. ANSWER DOWNLOAD EXAMIANS APP
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