Question

Find the amount of current (in amperes) that flows through a wire's cross-section, if an electrical charge of 0.8 C flows through it in 4 seconds.

• A. 0.5 A
• B. 0.2 A
• C. 0.25 A
• D. 0.01 A

Answer 1

The correct option is B 0.2 A

If a charge Q flows through the cross-section of a conductor in time t, then the current I through the cross-section is given by:
$I=\frac{Q}{t}$
$I=\frac{0.8C}{4s}=0.2A$