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CURRENT ELECTRICITY

Current Electricity
A 3 Q resistor having 2 A current will dissipate the power of

2 watts
8 watts
6 watts
4 watts

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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?

36 Q
18 Q
48 Q
64 Q

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Current Electricity
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is

Negative
About 2 ohms per degree
Positive
Zero

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Current Electricity
Voltage dependent resistors are used

As current stabilizers
To suppress surges
As heating elements
For inductive circuits

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

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

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