Question

A current of 200 mA flows for 2 mins. How much charge has passed?

Answer 1

Answer:

24,000 C

Explanation:

I = 200 mA

t = 2 min = 120s

I × t = 200 × 120

= 24000

Answer 2

Given - Current and time

Find - Charge

Solution - Charge is given by the formula = current*time

As per the known fact, 1000 mA = 1 A

Current in Amperes =

$\frac{1 \times 200}{1000}$

Performing multiplication and division

Current in Amperes = 0.2 Amperes

As per the known fact, 1 min = 60 seconds

2 mins = 60*2

Performing multiplication

2 mins = 120 seconds

Keep the values in formula to find the charge.

Charge = 0.2*120

Performing multiplication

Charge = 24 Coulombs.

Hence, 24 Coulombs charge has passed.