Abhi koi question add nahi kiya. PYQ Bank se questions add karein.
PYQ Bank ›
Class 12 › Physics › Electric Potential & Capacitance
CBSE2020Class Class 12 · Physics1 Marks · Mcq✅ Verified
A parallel plate capacitor with oil between the plates (dielectric constant K = 2) has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes
A. C/2
B. 2C
C. C/4
D. 4C
✅ Answer & Solution
✅ Correct Answer: A
โ Correct Answer: (A) C/2
Step 1 โ Capacitance with dielectric (oil):
C_oil = K ร ฮตโA/d = 2ฮตโA/d = C (given)
Step 2 โ Capacitance without dielectric (air):
C_air = ฮตโA/d = C_oil / K = C / 2
โด When oil is removed, <b>capacitance becomes C/2</b>.
