Question

in this question you have to calculate not to chose correct answer.... mr_____​

Answer 1

sorry i have no ans this qns

Answer 2

Answer:

(i) + 0.2 × 10^(-7), + 0.6 × 10^(-7)

(ii) - 0.2 × 10^(-7)

Explanation:

A : B : C = 1 : 3 : 7

C = - 1.4 × 10^(-7)

if A = x ; B = 3x ; C = 7x

then 7x = 1.4 × 10^(-7) (given)

x = 1.4 × 10^(-7) / 7

x = 0.2 × 10^(-7)

so.....

( i ) A = x = + 0.2 × 10^(-7)

B = 3x = 3 ( 0.2 × 10^(-7) )

B = + 0.6 × 10^(-7)

(ii) when all are in contact, charges shared and get equal.

i,e. ( +1 +3 -7 ) /3 = -3/3 = -1

hence.....

A = B = C = - 0.2 × 10^(-7) ( negative )