railway RRB Technician Grade 1 Mock Test 2024 Physics Atoms X Rays and the Ordering of the Elements

A charge q = 2 μC is moved by some external force from infinity to a point were electric potential is 10⁴ V. The work done by external force is:

1

1 × 10^-2 J

2

2 × 10-2 J

3

0.2 × 10-2 J

4

12 × 10^-2J

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