Question

Five styrofoam balls are suspended from
insulating threads. Several experiments are
performed on the balls and the following
observations are made –
(i) Ball A repels C and attracts B
(ii) Ball D attracts B and has no effect on E
(iii) A negatively charged rod attracts both A
and E.
An electrically neutral styrofoam ball gets
attracted if placed nearby a charged body due to
induced charge. What are the charges, if any, on
each ball?
(a) + – + 0+
(b) + – + + 0
(c) + – + 00
(d) – + – 00

Answer 1

Answer:

Five styrofoam balls are suspended from

insulating threads. Several experiments are

performed on the balls and the following

observations are made –

(i) Ball A repels C and attracts B

(ii) Ball D attracts B and has no effect on E

(iii) A negatively charged rod attracts both A

and E.

An electrically neutral styrofoam ball gets

attracted if placed nearby a charged body due to

induced charge. What are the charges, if any, on

each ball?

(a) + – + 0+ ✔️✔️

(b) + – + + 0

(c) + – + 00

(d) – + – 00

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