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Current Electricity

Current Electricity
Nichrome wire is an alloy of

Copper and silver
Nickel and chromium
Lead and zinc
Chromium and vanadium

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Current Electricity
Insulators have _______ temperature co-efficient of resistance.

None of the listed here
Positive
Zero
Negative

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Current Electricity
The resistance of human body is about

25 ohm
200 ohm
1000 ohm
10 ohm

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Current Electricity
If an electric current is passed through a nerve, the man

Becomes insensitive to pain
Is excited
Begins to laugh
Begins to weep

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Current Electricity
Three resistance of 10 ohms, 15 ohms, and 30 ohm are connected in parallel. The total resistance of the combination is

55 ohms
5 ohms
10 ohms
15 ohms

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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

9 Ω
11 Ω
12.1 Ω
10 Ω

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