Question

Suppose you place a charge q near a large metal plate. If q is attracted to the plate, is the plate necessarily charged? Yes, since only unlike charges can attract each other Yes, since only like charges can attract each other No, since a polarization charge could be induced in the plate No, since q can be attracted to an uncharged metal plate Question 8 (12.5 points) What would the electric field look like in a system with two parallel positively charged planes with equal charge densities? The electric field would be have magnitude of σ leo in between, and zero everywhere else. The electric field would be zero in between, and have magnitude σ /eo everywhere else. The electric field would be zero in between and everywhere else. The electric field would be have magnitude of o /to in between, and everywhere else.

Answer 1

7.) It's not necessarily charged , because plate gets polarized by q charge. Hence option third is correct.

8.) Since both plates are positively charged , field in between the plates will be zero and outside it will have some value.

Hence option second is correct .