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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

jeet jeetu , 12 Years ago
Grade 11
anser 1 Answers
Anirban Mukherjee

Last Activity: 12 Years ago

Initial Force =10X20/x^2

Final force=5X5/x^2

Charge=[10-20]/2=-5

F1/F2=200/25=8

 

 

 

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