OnlineCBT Logo OnlineCBT

Physics · Electrostatic Potential

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): When a dielectric medium is completely placed between the plates of a charged capacitor, the capacitance always increases by a factor \( K > 1 \). Reason (R): Polarization of the dielectric produces bound charges of opposite sign near the plates, which decreases the net electric field inside the dielectric for a given free charge on the plates. In the light of the above statements, choose the correct answer from the options given below:

  1. A
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. B
    Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. C
    is true but (R) is false.
  4. D
    is false but (R) is true.

Correct answer · Option A

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation

Due to polarization, \( E = \frac{\sigma - \sigma_p}{\varepsilon_0} = \frac{E_0}{K} \), reducing potential difference \( V = Ed \) for a given \( Q \), so \( C = Q/V = K C_0 \). Thus, (R) correctly explains (A).
पता संपर्क करें

+91 7877547686

ई-मेल

onlinecbtportal@gmail.com

हेल्पलाइन नंबर

+91 7877547686


डाउनलोड करने के लिए क्लिक करें
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

WhatsApp Chat