Assertion: Basic difference between an electric line and magnetic line...
Assertion: Basic difference between an electric line and magnetic line of force is that former is discontinuous and the latter is continuous or endless.
Reason: No electric lines of force exist inside a charged body but magnetic lines do exist inside a magnet.
The correct answer is option 'A' - If both the assertion and reason are true and the reason is the correct explanation of the assertion.
Explanation:
Electric lines of force:
- Electric lines of force represent the direction and magnitude of the electric field in a given region.
- Electric lines of force originate from positive charges and terminate on negative charges.
- These lines are continuous and do not have any breaks or discontinuities.
Magnetic lines of force:
- Magnetic lines of force represent the direction and magnitude of the magnetic field in a given region.
- Unlike electric lines of force, magnetic lines form closed loops and do not have any starting or ending points.
- Inside a magnet, the magnetic lines of force emerge from the north pole and enter the south pole, forming continuous loops.
- These lines are continuous and do not have any breaks or discontinuities.
Explanation of the assertion:
- The assertion states that the basic difference between an electric line and a magnetic line of force is that the former is discontinuous, while the latter is continuous or endless.
- This is true as electric lines of force start from a charge and terminate on another charge, while magnetic lines of force form closed loops without any breaks or discontinuities.
Explanation of the reason:
- The reason states that no electric lines of force exist inside a charged body, but magnetic lines do exist inside a magnet.
- This is true as electric lines of force start from positive charges and terminate on negative charges, so there are no electric lines of force inside a charged body.
- On the other hand, magnetic lines of force form closed loops and exist inside a magnet, emerging from the north pole and entering the south pole.
Explanation of the correct answer:
- The reason provided correctly explains the assertion. The basic difference between electric and magnetic lines of force is their continuity. Electric lines of force are discontinuous, while magnetic lines of force are continuous and endless.
- Hence, option 'A' is the correct answer.
Assertion: Basic difference between an electric line and magnetic line...
In case of the electric dipole, the electric lines of force originate from positive charge and end at negative charge. Since isolated magnetic lines are closed continuous loops extending throughout the body of the magnet
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