Question

5
A charge of 45 C flows through an electric appliance in 3.0 minutes.
What is the average current in the appliance?
A 0.25 A
B 4.0 A
C 15 A
D 135 A​

Answer 1

Solution :

⏭ Given:

✏ Charge flow = 45C

✏ Time interval = 3 min

⏭ To Find:

✏ Average current in the appliance

⏭ Concept:

✏ Current is defind as flow of charge in other words ratio of charge flow to the unit time.

⏭ Calculation:

$\star \: \underline{ \boxed{ \bold{ \sf{ \pink{Current = \frac{Charge}{Time}}}}}} \: \star$

⏭ Conversation:

✏ 3 min = 180 s

⏭ Calculation:

$\implies \sf \: Current = \frac{45}{180} \\ \\ \implies \: \underline{ \boxed{ \bold{ \sf{ \purple{Current(I) = 0.25 \: A}}}}} \: \large{ \star}$

⏭ Additional information:

• Current is a scalar quantity.
• Current is fundamental physical quantity.
• SI unit of current is A.