# A conductor carries a current of 0.2a . Find the amt. of charge hat will pass through the cross section of a conductor in 30 sec. How many electrons will flow in this time interval of the charge on 1 electron is 1.6 x 10^-19

2
by rohithmanoj15

2015-04-08T11:11:53+05:30

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Pls see the attachment
correct well done
2015-04-12T00:20:29+05:30

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E = 1.6 * 10⁻¹⁹ Coulombs
current I = 0.2 Amperes
time duration t = 30 seconds

Charge = Q = current * time duration = I * t = 0.2 sec * 30 sec = 6 coulombs

number of electrons that are equal to this charge = 6 Coulombs / 1.6 * 10⁻¹⁹ coulombs
= 3.75 * 10¹⁹

If this many electrons pass through a cross section of the conductor in 30 seconds time.