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8. 74 72 A charge of 20mC flows through a cross section 6mmº normally in 2 sec. The current is (A) 4 mA (B) 25 mA (C) 10 mA (D) 20 mA |
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Answer» Given : q=10 C t=5 s t q
= 5 10
=2 A |
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