Because copper rod is a conductor, friction cannot readily charge it. Friction alone can readily charge non-conducting materials.
The correct option is (B): A copper rod
A | B | ||
---|---|---|---|
(i) | Kharif crops | (a) | Food for cattle |
(ii) | Rabi crops | (b) | Urea and super phosphate |
(iii) | Chemical fertilizers | (c) | Animal excreta, cow dung urine and plant waste |
(iv) | Organic manure | (d) | Wheat, gram, pea |
(e) | Paddy and maize |
It is the property of subatomic particles that experiences a force when put in an electric and magnetic field. It is are of two types: Positive and Negative. It commonly carried by charge carriers protons and electrons.
Various properties of charge include the following :-
Two kinds of electric charges are there :-
When there is an identical number of positive and negative charges, the negative and positive charges would cancel out each other and the object would become neutral.