Question

17. Three positively charged particles lies on a straight line at positions 0,x and 10 as indicated in the fig- ure below. Their charges are Q, 2Q and 4Qcm respectively. If the charges at x=0 and x=10 are fixed and the charge at x is movable, the system will be in equilibrium when x=​

Answer 1

Answer:

E=

4πϵ

0

1

c=1

∑

10

r

i

2

q

i

=

4πϵ

0

1

v=1

∑

n

(10i)

2

i

3

×10

−8

×10

−4

=

10

2

×10

−4

9×10

9

×10

−8

i=1

∑

10

i

2

i

3

=9×10

2

(

2

10×11

)

=9×55×10

3

=495×10

3

N

=4.95×10

5

N