(a) Your little brother likes to rub his feet on the carpet and then touch you to give you a shock. While you are trying to escape the shock treatment, you discover a hollow metal cylinder in your basement, large enough to climb inside. In which of the following cases will you not be shocked? Please justify your answer. i) You climb inside the cylinder, making contact with the inner surface, and your charged brother touches the outer metal surface. ii) Your charged brother is inside touching the inner metal surface and you are outside, touching the outer metal surface. iii) Both of you are outside the cylinder, touching its outer metal surface but not touching each other directly.

(a) Your little brother likes to rub his feet on the carpet and then touch you to give you a shock. While you are trying to escape the shock treatment, you discover a hollow metal cylinder in your basement, large enough to climb inside. In which of the following cases will you not be shocked? Please justify your answer. i) You climb inside the cylinder, making contact with the inner surface, and your charged brother touches the outer metal surface. ii) Your charged brother is inside touching the inner metal surface and you are outside, touching the outer metal surface. iii) Both of you are outside the cylinder, touching its outer metal surface but not touching each other directly.