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Current Electricity

Current Electricity
If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

0.4 ohm
0.6 ohm
0.8 ohm
1.0 ohm

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Current Electricity
The flow of current in solids is due to

Atoms
Nucleus
Electrons and ions
Electrons

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Current Electricity
If the efficiency of a machine is to be high, what should be low?

Losses
kWh consumed
Input power
True component of power

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Current Electricity
SI unit of power is

Watt
Coulomb
Watt-hour
Henry

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Current Electricity
E. M. F. In a circuit

Maintains potential difference
Increases circuit resistance
Decrease circuit resistance
None of the listed here

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Current Electricity
No current flow between two charged bodies if they have same

Charge
Potential
Capacity
None of the listed here

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