A charge Q is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is 10 V/m. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge Q uniformly distributed, then the electric field at the point P will be

Question

A charge Q is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is 10 V/m. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge Q uniformly distributed, then the electric field at the point P will be (A) 5 V/m (B) zero (C) 10 V/m (D) 20 V/m

Tardigrade Admin · Accepted Answer

Electric field will remain same as charge density σ remain same (E=σ /ε 0) .

5 V/m

zero

10 V/m

20 V/m

Electric field will remain same as charge density σ remain same (E=σ/ε0​) .

Electric field will remain same as charge density $σ$ remain same $(E = σ / ε_{0})$ .