| Directions : (1-40) For Assertion and Reason Type Questions |
| In this type of question, a statement of assertion [A] is followed by a statement of reason [R]. Mark the correct choice as : |
| ASSERTION: Positive charge always moves from a higher potential point to a lower potential point. |
| REASON: Electric potential is a vector quantity |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: C
Solution :
If two points P and Q in an electric field are separated by an infinitesimal distance \[\Delta x\] and have a potential difference \[\Delta V\] between them, \[E=\frac{-\,\Delta V}{\Delta x}\]. Here negative sing implies that \[\overrightarrow{E}\] has got a directions opposite to the potential gradient i.e. in the direction of \[\overrightarrow{E}\]the potential decreases i.e. positive charge always move from a higher potential point to a lower potential point.
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