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Current Electricity

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

Low but not zero
Zero
High but within tolerance
Infinite

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Current Electricity
Sparking occurs when a load is switched off because the circuit has high

Resistance
Impedance
Capacitance
Inductance

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Current Electricity
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is

Positive
Negative
Zero
About 2 ohms per degree

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Current Electricity
If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

0.4 ohm
0.6 ohm
0.8 ohm
1.0 ohm

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Current Electricity
The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around

1.4 x 10-8 ω-m
1.2 x 10-8 ω-m
1.8 x 10-8 ω-m
1.6 x 10-8 ω-m

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Current Electricity
Eureka has _______ temperature co-efficient of resistance.

Positive
Almost zero
None of the listed here
Negative

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MORE MCQ ON Current Electricity

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