defence exam BSF Head Constable (RO/RM) Mock Test 2023 Physics Electromagnetic Induction and Inductance
When a polythene tube is rubbed with a woollen cloth, the polythene tube
1
becomes negatively charged while the cloth has a positive charge
2
and the cloth both acquire negative charge
3
becomes positively charged while the cloth has a negative charge
4
and the cloth both acquire positive charge