Question

A copper ball 1 cm in diameter is immersed in oil with a
density 800 kg m- What is the charge of the ball if in a
homogeneous electric field it is suspended in oil ? The
electric field is directed vertically upwards and its
intensity E=36000 V cm'. The density of copper is 8600
kg m-
1) 3.10 x 10-7C
2) 5.10 x 10-8 C
3) 9.11 x 10-7C
4) 1.11 x 10- C
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Answer 1

Answer:

Average speed is defined as the average distance travelled per unit time and is obtained by dividing the total distance travelled by the total time taken.

Explanation: