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+1 vote
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in Electric Charges and Fields by (58.8k points)
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Two point charges q1 and q2 are separated by a distance ‘r’ in space

1. What happens to the force between the charges; 

  • When the magnitude of the point charges increases 
  • When the distance of separation decreases

2. Three point charges +2µC each are placed at the corners of an equilateral triangle of side 1 m. Find the magnitude of the force between charge q1 and q1 [F12] and q1 and q3 [F13].

3. Draw \( \overrightarrow F_{12}\) and \( \overrightarrow F_{13}\) at A and find the total force acting on q1 .

1 Answer

+1 vote
by (48.9k points)
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Best answer

1. The force between the charges:

  • Force increases
  • Force decreases

F = \(\frac{1}{4\pi \varepsilon_0}\frac{q_1\times q_2}{r_2}\)

2. Force between q1 and q2 

= 36 x 10-3 N.

3. 

Total force on A, 

= 62.35 × 10-6 N.

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