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Current Electricity

Current Electricity
Temperature coefficient of resistance is expressed in terms of

ohms/ohm°C
mhos/°C
ohms/°C
mhos/ohm°C

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Current Electricity
A wire having very high value of conductance is said to be

None of the listed here
Very good conductor
Moderately good conductor
Insulator

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Current Electricity
Two resistances Rl and Ri are connected in series across the voltage source where Rl > Ri. The largest drop will be across

Either Rl or Ri
Ri
None of them
Rl

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

Inductance
Impedance
Resistance
Capacitance

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Current Electricity
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will

None of these
Decrease
Remain constant
Increase

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Current Electricity
A thermistor has

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

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