Physics Test Preparations On Current Electricity Part 2

Test Preparation on Physics Test Preparations On Current Electricity Part 2

1.

According to OhmaEURtms law?

1V = IR
2V = 1A2R
3V = 1RA2
4V = IA2RA2

2.

The unit of resistivity is?

1Ohm
2Ohm-mA2
3OhmaEURm
4OhmaEURmA3

3.

Identify the set in which all the three materials are good conductors of electricity

1Cu, Ag, Au
2Cu, Ag, Au
3Cu, Si, Diamond
4Cu, Ge, Hg

4.

The resistance of an incandescent lamp is

1Greater when switched off
2The same whether it is switched off or switched on
3Smaller when switched on
4None of these

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