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Current Electricity

Current Electricity
Two resistances Rl and Ri are connected in series across the voltage source where Rl > Ri. The largest drop will be across

Either Rl or Ri
None of them
Ri
Rl

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Current Electricity
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will

Remain constant
None of these
Increase
Decrease

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Current Electricity
A copper wire has a resistance of 10 Ω. It is stretched by one-tenth of its original length. Then its resistance will be

10 Ω
12.1 Ω
9 Ω
11 Ω

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Current Electricity
Conductivity is the reciprocal of

Resistance
None of the listed here
Resistivity
Current density

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Current Electricity
An electric filament bulb can be worked from

DC supply only
AC supply only
Battery supply only
All of the listed here

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Current Electricity
Which of the following statement is true both for a series and a parallel D.C. circuit?

Voltages are additive
Power are additive
Elements have individual currents
Currents are additive

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