Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other? 36 Q 64 Q 18 Q 48 Q 36 Q 64 Q 18 Q 48 Q ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following material has nearly zero temperature co-efficient of resistance? Porcelain Manganin Copper Carbon Porcelain Manganin Copper Carbon ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity It becomes more difficult to remove First electron from the orbit Any electron from the orbit Third electron from the orbit Second electron from the orbit First electron from the orbit Any electron from the orbit Third electron from the orbit Second electron from the orbit ANSWER DOWNLOAD EXAMIANS APP
Current Electricity SI unit of power is Watt-hour Watt Coulomb Henry Watt-hour Watt Coulomb Henry ANSWER DOWNLOAD EXAMIANS APP
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