| Directions (Q. No. 1 - 8): In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. |
| Assertion (A): Electric field is always normal to equipotential surfaces and along the direction of decreasing order of potential. |
| Reason (R): Negative gradient of electric potential is electric field. [CBSE SQP 2020-21] |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is fake and R is True
Correct Answer: A
Solution :
| Option [a] is correct. |
| Explanation: \[\overset{\to }{\mathop{E}}\,=-\overset{\to }{\mathop{\nabla }}\,\ V\] |
| So, The electric field is always perpendicular to equipotential surface. |
| Negative gradient of electric potential is electric field. So, direction of electric field must be in the direction of the decreasing order of electric potential. |
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