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Assertion: A domestic electrical appliance, working on a three pin, will continue working even if the top pin is removed.
Reason: The third pin is used only as a safety measure.
(a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b)If both Assertion and Reason are true but Reason is not the explanation of Assertion.
(c)If Assertion is true but Reason is false.
(d)If Assertion is false but Reason is true.

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Important Questions on Current Electricity
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A current of flows through a resistor represented by the circuit diagram. The current in the resistor is:

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In the circuit shown, the current in the resistor is:

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All the resistors are identical. The ratio is

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EASY
In the circuit, wire is of negligible resistance. Then

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HARD

HARD

EASY
The potential difference between the points and in the given figure is

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HARD


HARD
The figure below shows a circuit and its input voltage as a function of time .
Assuming the diodes to be ideal, which of the following graphs depicts the output voltage as function of time

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If a current of magnitude, flows through the resistor marked , what is the potential difference measured between points and ?

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For a diode connected in parallel with a resistor, which is the most likely current -voltage characteristic graph?

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Two batteries with e.m.f. and are connected in parallel across a load resistor of . The internal resistance of the two batteries are and respectively. The voltage across the load lies between,

EASY

In the above circuit the current in each resistance is:

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