- #1
Dell
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a ball with a radius R and a charge of +Q is placed inside a conductive shell with an inner radius of 3R and outer radius of 4R, the shell has a charge of -4Q, after the ball is placed inside what will the charge on each radius be??
i thought (intuition) that if i place a ball with a charge of Q then more electrons will come to the inner radius making the 3R have a charge of -3Q and the 4R a charge of -Q,... (since at the beginning there was a total of -4Q)
by using gauss surface , and taking a spherical surface with a radius of just more than 3R, then EA=0=Q+(xQ), giving me the result that x=-1, therefore the inner radius will have a charge of -Q and the outer will have a charge of -3Q
i thought (intuition) that if i place a ball with a charge of Q then more electrons will come to the inner radius making the 3R have a charge of -3Q and the 4R a charge of -Q,... (since at the beginning there was a total of -4Q)
by using gauss surface , and taking a spherical surface with a radius of just more than 3R, then EA=0=Q+(xQ), giving me the result that x=-1, therefore the inner radius will have a charge of -Q and the outer will have a charge of -3Q