Current Electricity When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will Decrease Remain constant Increase None of these Decrease Remain constant Increase None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Inductors Insulators Semi-conductors Conductors Inductors Insulators Semi-conductors Conductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a tungsten lamp _____ as applied voltage increases. Increases Decreases Remains same None of the listed here Increases Decreases Remains same None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Out of the following which is not a poor conductor? Cast iron Tungsten Carbon Copper Cast iron Tungsten Carbon Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. None of the listed here Remains unchanged Decreases Increases None of the listed here Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains None of these Length of heating element should be increased Length of heating element should be decreased Length of heating element has no effect on heating if water None of these Length of heating element should be increased Length of heating element should be decreased Length of heating element has no effect on heating if water ANSWER DOWNLOAD EXAMIANS APP
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