CUET Preparation Today
An isolated sphere has a capacitance of 60 pF. what is the radius of the sphere? |
540 cm 54 cm 0.054 cm 0.54 cm |
54 cm |
The correct answer is Option (2) → 54 cm The capacitance of a capacitor is, $C=4πε_0r$ $⇒r=\frac{C}{4πε_0}=\frac{60×10^{-12}}{4π×8.85×10^{-12}}$ $≃0.538m=53.8cm$ |
