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```
Two equal metal balls are charged to 10 and -20 units of electricity. Then they are brought in contact with each other and then again separated to the original distance. The ratio of magnitudes of the forces between the two balls is: (a) + 8 : 1 (b) 1 : 8 (c) +2 : 1 (d) 1 : 2

Two equal metal balls are charged to 10 and -20 units of electricity. Then they are brought in contact with
each other and then again separated to the original distance. The ratio of magnitudes of the forces between
the two balls is:
(a) + 8 : 1 (b) 1 : 8 (c) +2 : 1 (d) 1 : 2

```
8 years ago

## Answers : (1)

Anirban Mukherjee
47 Points
```
Initial Force =10X20/x^2

Final force=5X5/x^2
Charge=[10-20]/2=-5
F1/F2=200/25=8

```
8 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions