
Concept explainers
If a 2.5 A current is run through a circuit for 35 minutes, how many coulombs of charge moved through the circuit?

Interpretation:
The coulombs of charge moved through the circuit should be calculated.
Concept Introduction:
Current is defined as the rate of charge passed through the circuit. It is mathematically represented as follows:
Here, I is current, Q is charge and t is time.
The SI unit of current is Ampere denoted by symbol A.
Thus, 1 A current means 1 C of charge is passed through a wire every 1 second.
Or,
Answer to Problem 1E
5250 C
Explanation of Solution
Given Information:
The current passed through the wire is 2.5 A and time is 35 min.
Calculation:
The current is related to charge and time as follows:
Thus, charge can be calculated from current as:
Putting the values,
Thus, the charge moving through the circuit is 5250 C.
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