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Current Electricity

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

Low but not zero
High but within tolerance
Zero
Infinite

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Current Electricity
At 0 K, germanium behaves as

An insulator
A superconductor
A ferromagnetic substance
A conductor

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Current Electricity
Which of the following is the best material for making connecting wires?

Constant
Nichrome
Copper
Manganin

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Current Electricity
In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is

66 V
80 V
132 V
33 V

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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

Remain constant
Decrease
Increase
None of these

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

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

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