3. Remember : the outer cylinder of the Faraday pail is grounded. In procedure 1

Question

3. Remember: the outer cylinder of the Faraday pail is grounded.
In procedure 1: suppose a negative charge is placed inside (but not touching) the inner cylinder of the Faraday pail.

a) The charge on the two surfaces of the outer cylinders are

1)neutral on both surfaces,2)positive on both surfaces ,3) positive on the outside, neutral on the inside, 4)neutral on the outside, positive on the inside, 5)negative on the outside, neutral on the inside, 6)positive on the outside, negative on the inside, 7)negative on the outside, positive on the inside, 8)negative on both surfaces, 9)neutral on the outside, negative on the inside

b) The charge on the two surfaces of the inner cylinder are

1)positive on both surfaces, 2)neutral on both surfaces ,3)negative on the outside, neutral on the inside, 4)negative on the outside, positive on the inside, 5)neutral on the outside, positive on the inside, 6)positive on the outside, negative on the inside, 7)positive on the outside, neutral on the inside, 8)negative on both surfaces, 9)neutral on the outside, negative on the inside

c) The net charge on the entire Faraday pail is

1)negative,2)neutral,3) positive ,4)cannot be determined from the information given

Explanation / Answer

(a) The charge on the two surfaces of the outer cylinders are

4)neutral on the outside, positive on the inside

As the negative charged is placed inside, (a positive charge will be there on the inner side of inner cylinder, and a negative on the outer surface of it due to this ) a positive charge will be there on the inner surface to keep the net charge zero. As the outer surface is grounded, it will not have any charge on it.

(b) The charge on the two surfaces of the inner cylinder are

4)negative on the outside, positive on the inside

As the negative charged is placed inside, a positive charge will be there on the inner side of inner cylinder, and a negative on the outer surface it to keep the net charge zero.

c)The net charge on the entire Faraday pail is

3)Positive.

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