Electric current flowing through a metallic

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Q.
Assertion: Electric current flowing through a metallic wire is directly proportional to the potential difference across its ends.
Reason: Ohm’s law expression V=IR, where R (resistance) of the wire is always varying.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(3)

Ohm’s law states that the electric current flowing through a metallic wire is directly proportional to the potential difference across its two ends. The expression is:

V=IR

Here, R (resistance of the wire) is constant value, then only the statement will be valid.

$V \propto I o n l y i f \frac{V}{I} = c o n s \tan t$

Thus, assertion is true, but reason is false.

Solution

Q.
Assertion: Electric current flowing through a metallic wire is directly proportional to the potential difference across its ends.
Reason: Ohm’s law expression V=IR, where R (resistance) of the wire is always varying.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

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Solution

Q. Assertion: Electric current flowing through a metallic wire is directly proportional to the potential difference across its ends. Reason: Ohm’s law expression V=IR, where R (resistance) of the wire is always varying.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

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Q.
Assertion: Electric current flowing through a metallic wire is directly proportional to the potential difference across its ends.
Reason: Ohm’s law expression V=IR, where R (resistance) of the wire is always varying.