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Electric Circuits

Electric Circuits
Which material has extremely large resistance?

None of these
 Semiconductor
 Conductor
 Insulator

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Electric Circuits
A piece of copper and another piece of germanium are cooled from room temperature to 80K. The resistance of

 copper decreases and germanium increases.
 each of them increases.
 copper increases and germanium decreases.
 each of them decreases.

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Electric Circuits
The current through the 2 KΩ resistance ( rest resitances are all 1 ohm each ) in the circuit shown in diagram

 0 mA.
 6 mA.
 2 mA.
 1 mA.

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Electric Circuits
Active filter consists of

 capacitor.
 inductor.
 op-amp.
 op-amp and capacitor.

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Electric Circuits
In active filter which element is absent?

 Capacitor.
 Inductor.
 Resistor.
 Both of above.

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Electric Circuits
During charging, the electrolyte of a lead acid battery becomes

 diluted with water.
 weaker.
 there is no change in electrolyte.
 stronger.

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MORE MCQ ON Electric Circuits

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