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. 36 50 8 2 36 50 8 2 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 decrease. none of these. remain constant. increase. decrease. none of these. remain constant. increase. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A p.d. of 300 V is applied across series combination of 3 μF and 9 μF capacitors. The charge on each capacitor is ___________________ μC. 240. 3600. 7.5. 675. 240. 3600. 7.5. 675. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits At which of the following frequency voltage across capacitor has maximum value for series circuit ? Greater than resonance frequency Less than resonance frequency Zero frequency Equal to resonance frequency Greater than resonance frequency Less than resonance frequency Zero frequency Equal to resonance frequency ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The current in a chemical cell is a movement of positive hole charges. positive and negative ions. positive ions only. negative ions only. positive hole charges. positive and negative ions. positive ions only. negative ions only. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The electrical conductivity of metal is typically of the order of (in ohm - m) 105. 10 - 6. 107. 10 - 4. 105. 10 - 6. 107. 10 - 4. ANSWER DOWNLOAD EXAMIANS APP
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