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Current Electricity

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

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

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Current Electricity
Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators.

Variable resistors
Varistors
Thermistor
Semiconductors

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Current Electricity
Semiconductors have _______temperature co-efficient of resistance.

Positive
Zero
None of the listed here
Negative

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Current Electricity
SI unit of power is

Henry
Watt-hour
Watt
Coulomb

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Current Electricity
Varistors are

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

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Current Electricity
Nichrome wire is an alloy of

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

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