MHT CET2007PhysicsCurrent Electricity
A parallel plate condenser with oil (dielectric constant 2 ) between the plates has capacitance C. If oil is removed, the capacitance of capacitor becomes
Options
- A2 C
- B2 C
- CC 2
- DC 2
Correct answer
D. C 2
Step-by-step solution
The capacitance of a parallel plate capacitor with dielectric (oil) between its plates is. C= K ₀ A d where ₀= electric permittivity of free space K= dielectric constant A= area of each plate of capacitor d= distance between two plates When dielectric (oil) is removed, so capacitance C₀= ₀ A d Comparing Eqs. (i) and (ii), we get C=K C₀ ( K=2)