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An electric bulb draws a current of 0.25A for 20 minutes calculate the electric charge?
Wiki User
∙ 14y ago
1 Ampere = 1 Coulomb per second
0.25 A = 0.25 Coulomb per sec
1 minute = 60 seconds
20 minutes = (20 x 60) = 1,200 seconds
0.25 A for 20 minutes = (0.25 x 1,200) = 300 Amp-seconds = 300 Coulombs of charge
Wiki User
∙ 14y ago
Wiki User
∙ 9y agowe have
I = q/t
or
amount of electric charge
q = I.t
here
I = current = 0.2 A
t = time = 1hr = 3600 s
so,
q = 0.2 x 3600
thus,
q = 720 C
Wiki User
∙ 13y agoA current of 0.2 A, over a period of one hour, represents a flow of electric charge of 720 Coulombs.
1 ampere = 1 coulomb per second
0.2 amperes = 0.2 coulombs per second = 720 coulombs per hour
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