Current Electricity Which of the following statement is true both for a series and a parallel D.C. circuit? Elements have individual currents Power are additive Voltages are additive Currents are additive Elements have individual currents Power are additive Voltages are additive Currents are additive 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? 50 V 200 V 100 V 150 V 50 V 200 V 100 V 150 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A wire having very high value of conductance is said to be None of the listed here Insulator Moderately good conductor Very good conductor None of the listed here Insulator Moderately good conductor Very good conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity At 0 K, germanium behaves as An insulator A superconductor A ferromagnetic substance A conductor An insulator A superconductor A ferromagnetic substance A conductor 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 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Remains constant First increases and then decreases Increases Decreases Remains constant First increases and then decreases Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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