If we double the distance between two charges, then force
becomes:
What will be the capacitance of capacitor by joining them in
parallel:
If the potential energy of none coulomb charge is one joule
then its potential will be:
The particles emitted from a hot cathode surface are:
To protect the gold leaves of electroscope from the external
electric disturbances, the aluminum foil is grounded by a thin wire, which is
made up of:
