NCERT Class XII Chapter <br>Electric Charges and Fields <br> Questions With Solutions

NCERT Class XII Chapter
Electric Charges and Fields
Questions With Solutions

Question : 1

Total: 34

What is the force between two small charged spheres having charges of 2 × 10−7 C and 3 × 10−7 C placed 30 cm apart in air?

Solution:

F =

4πε0

q1q2

= 9 × 109 ×

2×10−7×3×10−7

(30×10−2)2

or F = 6 × 10−3 N
(repulsive in nature, as the two charges are like charges.)

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