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Current Electricity

Current Electricity
Which of the following materials has the least resistivity ?

Copper
Zinc
Mercury
Lead

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Current Electricity
The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is

5 kWh
2 kWh
6 kWh
3.2 kWh

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

Inductance
Impedance
Capacitance
Resistance

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Current Electricity
Temperature coefficient of resistance is expressed in terms of

ohms/ohm°C
mhos/°C
mhos/ohm°C
ohms/°C

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

Almost zero
None of the listed here
Negative
Positive

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Current Electricity
Ampere-hour is the unit of

Power
Energy
Strength of current
Quantity of electricity

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MORE MCQ ON Current Electricity

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