Current Electricity E. M. F. In a circuit None of the listed here Decrease circuit resistance Increases circuit resistance Maintains potential difference None of the listed here Decrease circuit resistance Increases circuit resistance Maintains potential difference ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 1.0 ohm 0.4 ohm 0.6 ohm 0.8 ohm 1.0 ohm 0.4 ohm 0.6 ohm 0.8 ohm ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is 0.4% 0.3% None of the listed here 0.2% 0.4% 0.3% None of the listed here 0.2% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Mercury Zinc Copper Lead Mercury Zinc Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals First increases and then decreases Remains constant Decreases Increases First increases and then decreases Remains constant Decreases Increases 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
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