| ASSERTION: When a dielectric medium is filled between the plates of a condenser, its capacitance increases. |
| REASON: The dielectric medium reduces the potential difference between the plates of the condenser. |
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: A
Solution :
The dielectric molecules are polarized, producing an opposite electric field. Thus the effective electric field and hence the potential difference between the plates is reduced and consequently the capacitance is increased \[\left( \because \,\,C=\frac{Q}{V} \right)\].
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