Current Electricity With rise in temperature the resistance of pure metals Remains constant Increases Decreases First increases and then decreases Remains constant Increases Decreases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of conductor varies inversely as Area of cross-section Resistivity Length Temperature Area of cross-section Resistivity Length Temperature ANSWER DOWNLOAD EXAMIANS APP
Current Electricity International ohm is defined in terms of the resistance of A cube of copper A cube of carbon A column of mercury The unit length of wire A cube of copper A cube of carbon A column of mercury The unit length of wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals 60 W 10 W 40 W 20 W 60 W 10 W 40 W 20 W ANSWER DOWNLOAD EXAMIANS APP
Current Electricity E. M. F. In a circuit Maintains potential difference Increases circuit resistance Decrease circuit resistance None of the listed here Maintains potential difference Increases circuit resistance Decrease circuit resistance None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Copper Zinc Lead Mercury Copper Zinc Lead Mercury ANSWER DOWNLOAD EXAMIANS APP
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