Question

Assertion :In the circuit shown in figure, when a dielectric slab is inserted in $C_2$, the potential difference across $C_2$ will decrease. Reason: The current flows in clockwise direction after introduction of dielectric slab.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

By inserting dielectric slab, value of $C_2$ will increase to $K{C}_2$ where K is the dielectric constant. In series potential difference distributes in inverse ratio of capacitance. As capacitance $C_2$ is increased so potential across $C_2$ will decrease.
If $C_2$ is increased, charge on capacitors will also increase. $(q=CV)$
So, positive charge or current flows in clockwise direction.