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1.
The resistivity does not change if
2.
If the current I through a resistor is increased by 100 % (assume that temperature remains unchanged), the increase in power dissipated will be
3.
4.
A cylindrical conductor of length l and uniform area of cross-section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross-section
5.
What is the maximum resistance which can be made using five resistors each of 1/5 W?
6.
7.
A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is
8.
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
9.
A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power
10.
If P and V are the power and potential of device, the power consumed with a supply potential V1 is