Question

Find electric field in (N C -¹) at a distance 10cm from a charge of 1 micro C.
​

Answer 1

Explanation:

V

A

=

4πϵ

0

1

r

A

q

=

0.05

9×10

9

×20×10

−6

V

A

=36×10

−5

V

V

B

=

4πϵ

0

1

r

B

q

=

0.1

9×10

9

×20×10

−6

V

B

=18×10

−5

V

Work done=e△V

W=1.6×10

−19

(36×10

−5

−18×10

−5

)

W=28.8×10

−24

j=0.18meV

solution

V

A

=

4πϵ

0

1

r

A

q

=

0.05

9×10

9

×20×10

−6

V

A

=36×10

−5

V

V

B

=

4πϵ

0

1

r

B

q

=

0.1

9×10

9

×20×10

−6

V

B

=18×10

−5

V

Work done=e△V

W=1.6×10

−19

(36×10

−5

−18×10

−5

)

W=28.8×10

−24

j=0.18meV

solution

10 cm 5 cm 20 mc