Current Electricity A closed switch has a resistance of Infinity Zero About 50 ohms About 500 ohms Infinity Zero About 50 ohms About 500 ohms ANSWER DOWNLOAD EXAMIANS APP
Current Electricity It becomes more difficult to remove Second electron from the orbit Any electron from the orbit First electron from the orbit Third electron from the orbit Second electron from the orbit Any electron from the orbit First electron from the orbit Third electron from the orbit ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Decreases Remains constant First increases and then decreases Increases Decreases Remains constant First increases and then decreases Increases 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 Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 25 : 4 5 : 2 4 : 25 2 : 5 25 : 4 5 : 2 4 : 25 2 : 5 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 20 W 60 W 10 W 40 W 20 W 60 W 10 W 40 W ANSWER DOWNLOAD EXAMIANS APP
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