Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is 0.2% 0.3% None of the listed here 0.4% 0.2% 0.3% None of the listed here 0.4% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When current flows through heater coil it glows but supply wiring does not glow because Supply wiring is covered with insulation layer Supply wires are made of superior material Current through supply line flows at slower speed Resistance of heater coil is more than the supply wires Supply wiring is covered with insulation layer Supply wires are made of superior material Current through supply line flows at slower speed Resistance of heater coil is more than the supply wires ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a conductor varies inversely as Length Are of cross-section Resistivity Temperature Length Are of cross-section Resistivity Temperature ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A resistance having rating 10 ohms , 10 W is likely to be a Variable resistor Metallic resistor Carbon resistor Wire wound resistor Variable resistor Metallic resistor Carbon resistor Wire wound resistor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ampere-hour is the unit of Quantity of electricity Strength of current Energy Power Quantity of electricity Strength of current Energy Power 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? 150 V 200 V 100 V 50 V 150 V 200 V 100 V 50 V ANSWER DOWNLOAD EXAMIANS APP
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