The electric field between two square metal plates is100 N/C. The plates are 1.3 m on a side and are separated by 5.0 cm. What is the charge on each plate (assumeequal and opposite)? Neglect edge effects.
The field just outside a 3.20 cmradius metal ball is
2.40 102 N/C and points toward the ball. What
charge resides on theball?