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 Length of heating element should be decreased Length of heating element should be increased None of these Length of heating element has no effect on heating if water Length of heating element should be decreased Length of heating element should be increased None of these Length of heating element has no effect on heating if water ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Out of the following which is not a poor conductor? Tungsten Carbon Copper Cast iron Tungsten Carbon Copper Cast iron ANSWER DOWNLOAD EXAMIANS APP
Current Electricity SI unit of power is Coulomb Henry Watt-hour Watt Coulomb Henry Watt-hour Watt 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 All of the following are equivalent to watt except Amperes × volts Amperes/volt Joules/sec. (Amperes) ohm Amperes × volts Amperes/volt Joules/sec. (Amperes) ohm ANSWER DOWNLOAD EXAMIANS APP
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