Current Electricity In the case of direct current Magnitude of current remains constant Magnitude and direction of current changes with time Magnitude of current changes with time Magnitude and direction of current remains constant Magnitude of current remains constant Magnitude and direction of current changes with time Magnitude of current changes with time Magnitude and direction of current remains constant ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is 800 Ω 400 Ω 600 Ω 1000 Ω 800 Ω 400 Ω 600 Ω 1000 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a conductor varies inversely as Temperature Are of cross-section Resistivity Length Temperature Are of cross-section Resistivity Length ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is 0.4% 0.2% 0.3% None of the listed here 0.4% 0.2% 0.3% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is 66 V 33 V 80 V 132 V 66 V 33 V 80 V 132 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 3.2 kWh 6 kWh 5 kWh 2 kWh 3.2 kWh 6 kWh 5 kWh 2 kWh ANSWER DOWNLOAD EXAMIANS APP
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