Current Electricity Insulators have _______ temperature co-efficient of resistance. Zero None of the listed here Negative Positive Zero None of the listed here Negative Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will Heater will burn out Decreases Remains same Increases Heater will burn out Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. Zero Positive None of the listed here Negative Zero Positive None of the listed here Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity SI unit of power is Henry Watt Coulomb Watt-hour Henry Watt Coulomb Watt-hour 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 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Conductance is reciprocal of Resistance Capacitance Inductance Reluctance Resistance Capacitance Inductance Reluctance ANSWER DOWNLOAD EXAMIANS APP
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