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a charge of 90 C passes through a wire in 1 hour 15 minutes . what is the current in the wire

Sagot :

luana
We calculate current from the formula:
[tex]I= \frac{q}{t} [/tex] , where q is a electric charge transferred over time t 
Time should be converted to seconds:
1h 15 min= 75min= 4500s
I=[tex] \frac{90C}{4500s}=0,02A [/tex] Result is in unit-Ampere
AL2006
Current = C / seconds.

1 hour = 3600 seconds
15 minutes = 900 seconds

1 hour 15 minutes = 4500 seconds

90 C / 4500 sec = 0.02 amperes = 20 milliamperes
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