In the following question a statement of assertion (A) is followed by a statement of reason (R )
A : capacitor is a device which stores electric energy in the form of electric field .
R : Net charge on the capacitor is always zero.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark (1).
B. If both Assertion & Reason are true but the reason is not correct explanation of the assertion then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements , then mark (4).

Answer

To analyze the given assertion (A) and reason (R), we can break down the statements and validate their correctness step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "a capacitor is a device which stores electric energy in the form of an electric field."
- A capacitor consists of two conductive plates separated by an insulating material (dielectric). When a voltage is applied across the plates, positive charge accumulates on one plate and negative charge on the other, creating an electric field between them.
- This electric field represents the stored energy. The energy (U) stored in a capacitor can be expressed as:
\[ U = \frac{1}{2} C V^2 \]
where \(C\) is the capacitance and \(V\) is the voltage across the capacitor.

2. **Understanding the Reason (R)**:
- The reason states that "the net charge on the capacitor is always zero."
- In a capacitor, one plate has a charge of \(+Q\) and the other plate has a charge of \(-Q\). Therefore, the total charge (net charge) on the capacitor is:
\[ Q_{net} = +Q + (-Q) = 0 \]
- This indicates that while there are charges present on the plates, the overall charge of the capacitor remains neutral.

3. **Conclusion**:
- Both the assertion (A) and the reason (R) are correct.
- The assertion accurately describes the function of a capacitor, and the reason correctly explains the charge distribution in a capacitor.

### Final Answer:
Both the assertion (A) and the reason (R) are correct.

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