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Current Electricity
Specific resistance of a substance is measured in
Ω/m
None of the listed here
m/Ω
Ω-m
Ω/m
None of the listed here
m/Ω
Ω-m
Answer
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Related Question
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
3.2 kWh
2 kWh
6 kWh
5 kWh
3.2 kWh
2 kWh
6 kWh
5 kWh
Answer
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Current Electricity
Which of the following material has nearly zero temperature co-efficient of resistance?
Porcelain
Carbon
Manganin
Copper
Porcelain
Carbon
Manganin
Copper
Answer
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Current Electricity
In a lamp load when more than one lamp are switched on the total resistance of the load
None of these
Increases
Decreases
Remains same
None of these
Increases
Decreases
Remains same
Answer
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Current Electricity
Varistors are
Non-linear resistors
Resistor with zero temperature co-efficient
Carbon resistors
Insulators
Non-linear resistors
Resistor with zero temperature co-efficient
Carbon resistors
Insulators
Answer
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Current Electricity
Sparking occurs when a load is switched off because the circuit has high
Resistance
Inductance
Impedance
Capacitance
Resistance
Inductance
Impedance
Capacitance
Answer
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