GK QUESTION#3143

Assertion (A): Magnetic lines of force inside a bar magnet run from the South pole to the North pole. Reason (R): Magnetic field lines always form closed loops, running outside the magnet from North to South and inside from South to North.

ABoth A and R are true, and R is the correct explanation of ACorrect answer
BBoth A and R are true, but R is not the correct explanation of A
CA is true, but R is false
DA is false, but R is true

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Answer

A. Both A and R are true, and R is the correct explanation of A

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Explanation

In the usual bar-magnet field-line diagram, lines run outside from north to south and inside from south to north, forming closed curves. Both the assertion and reason describe that same continuous field pattern, so the reason explains the inside direction.

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Assertion (A): Magnetic lines of force inside a bar magnet run from the South pole to the North pole. Reason (R): Magnetic field lines always form closed loops, running outside the magnet from North to South and inside from South to North.

Answer

Explanation

Assertion (A): Magnetic lines of force inside a bar magnet run from the South pole to the North pole. Reason (R): Magnetic field lines always form closed loops, running outside the magnet from North to South and inside from South to North.

Answer

Explanation

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