Fill in the blanks.
(a) The charge on an ebonite rod is ………… .
(b) When glass and silk are rubbed on each other, the glass develops a ………… charge and the silk a ………… one.
(c) Friction causes the transfer of ………… particles.
(a) The charge on an ebonite rod is negative.
(b) When glass and silk are rubbed on each other, the glass develops a positive charge and the silk a negative one.
(c) Friction causes the transfer of charge particles.