Question

an electric current of 285.0 ma flows 674. milliseconds. Calculate the amount of electric charge transported. Be sure your answer has the correct unit symbol and the correct number of significant digits

Answer 1

To calculate the charge transported by a 285.0 mA current over 674.0 milliseconds, convert the units to amperes and seconds, then multiply to find the charge as 0.192 C.

Step-by-step explanation:

The student is asking how to calculate the amount of electric charge transported by a current of 285.0 mA over a time of 674.0 milliseconds. To find the charge Q, the formula Q = It is used, where I is the current in amperes and t is the time in seconds. Converting milliamps to amps and milliseconds to seconds, we use the values I = 0.285 A and t = 0.674 s. Therefore, Q = 0.285 A × 0.674 s = 0.19215 C. Given the significant digits of the current and time, the charge should be reported as 0.192 C.

Answer 2

The amount of electric charge transported = 0.192 C

Step-by-step explanation:

Electric Charge: This is defined as the product of electric current and time in an electric circuit, The S.I unit of electric charge is Coulombs (C)

Q = It..................... Equation 1

Where Q = Electric charge, I = electric current, t = time.

Given: I = 285 mA, t = 674 milliseconds.

Conversion: (i) Convert from 285 mA to A = (285/1000) A = 0.285 A

(ii) convert from 674 milliseconds to seconds = (674/1000) s = 0.674 s

Substituting these values into equation 1

Q = 0.285 × 0.674

Q = 0.192 C

Therefore the amount of electric charge transported = 0.192 C