(a) Why do dry hair stand on when combed with a plastic comb?

cbse-class-8
science
natural-phenomena

#1

(a) Why do dry hair stand on when combed with a plastic comb ?
(b) What kind of charge is acquired by ebonite when rubbed with fur ?
© What kind of charge is acquired by fur when it is rubbed over ebonite ?
(d) What type of charge is borne on clouds facing the earth ?
(e) Is dry air a conductor or an insulator ?
A. (a) Dry hair stand when combed with a plastic comb because they get charged.
(b) When rubbed with fur ebonite gets a negative charge.
© When fur is rubbe^ with ebonite, fur acquires positive charge.
(d) Normally, the layers of cloud facing the earth get negatively charged.
(e) Dry air is a bad conductor (or insulator) of electricity.