1. The problem statement, all variables and given/known data A metal ball is connected to the ground with a wire via a switch. The switch is initially closed (i.e.the ball is connected to ground) while a charge +Q is brought close to the ball (but not touching). While the charge is near the ball, the switch is opened and then the charge is taken away. The charge on the ball is now 2. Relevant equations i think the ball should accquire negative charge due to induction i.e -Q but as the switch is open the charge should flow to earth.so net charge should be zero or neutral. 3. The attempt at a solution solution is negative charge on ball. please help me fiqure out.