Current Electricity If the efficiency of a machine is to be high, what should be low? Losses Input power kWh consumed True component of power Losses Input power kWh consumed True component of power 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 400 Ω 600 Ω 1000 Ω 800 Ω 400 Ω 600 Ω 1000 Ω 800 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω? 50 V 200 V 150 V 100 V 50 V 200 V 150 V 100 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity International ohm is defined in terms of the resistance of A cube of carbon A column of mercury A cube of copper The unit length of wire A cube of carbon A column of mercury A cube of copper The unit length of wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open The other two bulbs will light Rest of the two bulbs will not light There will be heavy current in the main line All three bulbs will light The other two bulbs will light Rest of the two bulbs will not light There will be heavy current in the main line All three bulbs will light ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a straight conductor is independent of Shape of cross-section Temperature Cross-sectional area Material Shape of cross-section Temperature Cross-sectional area Material ANSWER DOWNLOAD EXAMIANS APP
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