Current Electricity Which of the following is the best conductor of electricity? Copper Gold Silver Zinc Copper Gold Silver Zinc ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When current flows through heater coil it glows but supply wiring does not glow because Resistance of heater coil is more than the supply wires Current through supply line flows at slower speed Supply wiring is covered with insulation layer Supply wires are made of superior material Resistance of heater coil is more than the supply wires Current through supply line flows at slower speed Supply wiring is covered with insulation layer Supply wires are made of superior material ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Remains constant Increases First increases and then decreases Decreases Remains constant Increases First increases and then decreases Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Ohm's law method Lorentz method Wheastone bridge method Releigh method Ohm's law method Lorentz method Wheastone bridge method Releigh method ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Negative Positive About 2 ohms per degree Zero Negative Positive About 2 ohms per degree Zero 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? 100 V 50 V 150 V 200 V 100 V 50 V 150 V 200 V ANSWER DOWNLOAD EXAMIANS APP
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