Respuesta :
Answer:
800 s
Explanation:
This can be solved using the equation:
I = Q/T where
I is the amount of current in A
Q is the amount of charge in C
T is the duration in s.
Hence by substituting the values, we get:
100 × 10^-3 = 80/T
T = 80/ 100 × 10^-3
T = 800 s
(Note: When substituting I, remember to change from mA to A)
It will take a current of 100mA, 800 seconds to flow so as to transfer a charge of 80C.
HOW TO CALCULATE TIME OF CURRENT FLOW:
- The time taken for a current to flow through a substance can be calculated using the following formula:
Q = It
Where;
- Q = Charge (coloumbs)
- I = current (Amperes)
- t = time taken (seconds)
- According to this question, a current of 100mA was given. It has to be converted to amperes (A) as follows:
1 ampere = 1000milliamperes
100mA = 100/1000
= 0.1A
- Therefore, the time can be calculated as follows:
t = Q ÷ I
t = 80C ÷ 0.1A
t = 800seconds.
- Therefore, It will take a current of 100mA 800 seconds to flow so as to transfer a charge of 80C.
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