Electric Current Physics Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium
A current of 0.5 A0.5 \text{ A} flows through a lamp for 2 minutes2 \text{ minutes}. How much charge passes through the lamp?

Solution

  1. 1
    Convert time: 2 min=120 s2 \text{ min} = 120 \text{ s}.
  2. 2
    Use the charge formula: Q=ItQ = It.
  3. 3
    Q=0.5×120=60 CQ = 0.5 \times 120 = 60 \text{ C}

Answer

Q=60 CQ = 60 \text{ C}
The total charge transferred equals current multiplied by time. Even a small current can transfer a large charge over a long time period.

About Electric Current

Electric current is the rate at which electric charge flows past a point in a circuit or conductor.

Learn more about Electric Current →

More Electric Current Examples

Example 1 easy

A charge of [formula] flows through a wire in [formula]. What is the electric current?

Example 3 easy

How long does it take for [formula] of charge to flow through a circuit with a current of [formula]?

Example 4 medium

A phone charger delivers a steady current of [formula] for [formula]. How much total electric charge

← All Electric Current Examples Electric Current Concept