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Current Electricity

Current Electricity
All of the following are equivalent to watt except

Amperes × volts
Amperes/volt
Joules/sec.
(Amperes) ohm

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

Inductance
Resistance
Impedance
Capacitance

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Current Electricity
A thermistor has

Negative temperature coefficient
Zero temperature coefficient
Variable temperature coefficient
Positive temperature coefficient

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Current Electricity
The insulation on a current carrying conductor is provided

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

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Current Electricity
The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is

0.6
1
1.5
0.5

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Current Electricity
Specific resistance of a substance is measured in

None of the listed here
Ω/m
m/Ω
Ω-m

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