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Current Electricity

Current Electricity
Resistance of a carbon filament lamp _______ as the applied voltage increases.

Remains same
Decreases
Increases
None of the listed here

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Current Electricity
The resistance of two wires is 25 Ω when connected in series and 6 Ω when joined in parallel. The resistance of each wire is

10 Ω, 15 Ω
20 Ω, 30 Ω
10 Ω, 20 Ω
5 Ω, 10 Ω

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Current Electricity
With rise in temperature the resistance of pure metals

Increases
Remains constant
First increases and then decreases
Decreases

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Current Electricity
The SI unit of power is

Watt
Watt-hour
Coulomb
Henry

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Current Electricity
Varistors are

Non-linear resistors
Carbon resistors
Resistor with zero temperature co-efficient
Insulators

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Current Electricity
The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other?

36 Q
64 Q
48 Q
18 Q

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