GCSE Physics - Charge, Current & Time #16

The video tutorial explains the concept of electric charge, using a water analogy to illustrate how charge is the total current that flows over time. Charge is represented by the letter Q and measured in coulombs. The fundamental equation for charge is given as charge equals current in amps multiplied by time in seconds. Two examples are provided: one involving a kettle to calculate charge, and another involving a phone charger to determine current. The tutorial also covers unit conversion and equation rearrangement for solving problems.

What is the unit of electric charge?

• Coulombs

• Volts

• Watts

• Amperes

In the water analogy, what does electric charge represent?

• The total amount of water flowed

• The width of the river

• The height of the water source

• The speed of water flow

A kettle draws a current of 12 amps for 50 seconds. How much charge passes through the wire?

• 600 coulombs

• 60 coulombs

• 50 coulombs

• 1200 coulombs

If a phone charger transfers 43,200 coulombs over two hours, what is the current flowing through the wire?

• 3 amps

• 24 amps

• 6 amps

• 12 amps

How do you rearrange the equation to find current when charge and time are known?

• I = T / Q

• I = Q * T

• I = Q + T

• I = Q / T