$18.1 Conductors in electric field Is this situation possible? S No, in this case, the conductor is not a equipotential body 6. Electrostatic shield $18.1 Conductors in electric field No charge on the a charged conductor conductor cavity cavity Q+q5 + s − Is this situation possible? No, in this case, the conductor is not a equipotential body. −− − − + + + + + + + + + + + E + E′ = 0 r r 6.Electrostatic shield §18.1 Conductors in electric field + + + + + + + + + + q − q − − − − − − − q + + + + + + No charge on the conductor cavity + + + + + + + + + + q − q − − − − − − − Q+q + + + + + + + + + + + + A charged conductor cavity §18.1 Conductors in electric field