Two objects are rubbed against each other, the nature of electric force, when they are placed at some distance is
Attractive
Repulsive
Both $(A)$ and $(B)$
Either $(A)$ or $(B)$
By which instrument, the charge on object can be detected ?
Why the metal rods can’t be charged by holding them in hands ?
What is called earthing ? Give importance of earthing in wiring.
What is quantization of charge ? What is the reason of quantization ?