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Current Electricity

Current Electricity
The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other?

48 Q
36 Q
64 Q
18 Q

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Current Electricity
At 0 K, germanium behaves as

A conductor
An insulator
A ferromagnetic substance
A superconductor

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Current Electricity
A thermistor has

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

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Current Electricity
Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct?

100 W lamp will glow brighter
40 W lamp will glow brighter
Both lamps will glow equally bright
40 W lamp will fuse

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Current Electricity
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is

800 Ω
1000 Ω
400 Ω
600 Ω

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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

132 V
33 V
80 V
66 V

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