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Electric Circuits

Electric Circuits
Atoms with fewer than 4 valence electrons are

 none of these.
 conductor.
 insulator.
 semi-conductor.

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Electric Circuits
In the circuit shown below, find the thevnin equivalent resistance.

 5/6 Ohm.
 1.5 Ohm.
 6/5 Ohm.
 5 Ohm.

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Electric Circuits
Container of a lead acid battery

 ceramics.
 molded hard rubber.
 any of above.
 celluloid.

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Electric Circuits
For steady state current inductor acts as

 Open circuit
 Voltage source
 Current source
 Short circuit

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Electric Circuits
A positive and a negative charged conductor are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

 10 times greater than before.
 5 times smaller than before.
 25 times larger than before.
 5 times greater than before.

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Electric Circuits
Instantaneous power in inductor is proportional to the

 temperature of the inductor.
 product of the instantaneous current and rate of change of current.
 square of instantaneous current.
 square of the rate of change of current.

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