Current Electricity With rise in temperature the resistance of pure metals Remains constant Increases First increases and then decreases Decreases Remains constant Increases First increases and then decreases Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A 3 Q resistor having 2 A current will dissipate the power of 2 watts 8 watts 4 watts 6 watts 2 watts 8 watts 4 watts 6 watts ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In case of liquids, ohm's law is Fully obeyed Partially obeyed There is no relation between current and p. d None of the listed here Fully obeyed Partially obeyed There is no relation between current and p. d None of the listed here 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 1.4 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 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 4 : 25 5 : 2 2 : 5 25 : 4 4 : 25 5 : 2 2 : 5 25 : 4 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Dc circuits Small resistors High currents Semi-conductors Dc circuits Small resistors High currents Semi-conductors ANSWER DOWNLOAD EXAMIANS APP
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