(9)What is the magnitude of the electrostatic
force exerted by sphere A on sphere B?
1.7.2 x 10-'N
2.3.6 x 10'N
3. 8.0 x 10-13N
4.4.0 x 10-13N

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell