Question

05 marks
2.
Find the electric intensity midway between the charges + 1.36 x 10° coul
and -1.36 x 10-9 coul.
​

Answer 1

Answer:

The objects have equal absolute charges but with different signs. Find electric intensity of the point charge

is

⃗ =

2

⃗⃗⃗ .

For the positive charge:

⃗⃗⃗⃗ =

2

⃗⃗⃗ .

For the negative charge:

⃗⃗⃗⃗ =

(−)

2

(−

⃗⃗⃗ ) =

2

⃗⃗⃗ =

⃗⃗⃗⃗ .

By the superposition principle:

⃗ =

⃗⃗⃗⃗ +

⃗⃗⃗⃗ = 2

⃗⃗⃗⃗ .

= 2

8.99 ∙ 109

∙ 1.36 ∙ 10−9

0.4

2 = 153