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Current Electricity

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

Zero
None of the listed here
Negative
Positive

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Current Electricity
An open resistor, when checked with an ohmmeter reads

Zero
Low but not zero
High but within tolerance
Infinite

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Current Electricity
Electrical current is due to the flow of

Neutral particles only
Positive charges only
Both positive and negative charges
Negative charges only

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Current Electricity
The insulation on a current carrying conductor is provided

Both of the listed here
None of above factors
To prevent shock
To prevent leakage of current

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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
Resistance of a tungsten lamp _____ as applied voltage increases.

Increases
None of the listed here
Decreases
Remains same

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