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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