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Good morning sir.
Answer is 4th option.
Explain sir.....
one year ago

Answers : (1)

Khimraj
3008 Points
							
Charge on 4\muF = 4*6 = 24\muC
charge on 9\muF = 9*2 = 18\muC
so total charge = 42\muC
then electric field
E = kQ/r2 = 9*109*42*10-6/900 = 420 N/C 
Hope it clears. If you like answer then please approve it.
one year ago
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