Year 10 Physics Energy Transfer in Circuits

What is charge in a circuit?

• Charge in a circuit is the temperature of the wires

• Charge in a circuit is the color of the wires

• Charge in a circuit is the weight of the wires

• Charge in a circuit is the flow of electric current

Charge is the flow of ​ (a)   around a circuit. It has the symbol ​ (b)   and is measured in a unit called a ​ (c)   which has the symbol ​ (d)  

• electrons
• Q
• Coulomb
• C

Match the following Symbols and their meaning

• Coloumb

• C

• Current

• t

• Charge

• Q

• Voltage

• V

• time

• I

Reorder the following to give the equation for calculating charge

• I

• ×

• =

• t

• Q

Reorder the following to give the equation that links charge, current and time (calculate the charge)

• ×

• Q

• t

• I

• =

Reorder the following to give the equation that links time with charge and current (calculate time)

• t

• I

• =

• ÷

• Q

Reorder the following to make the equation that describes the relationship between currennt, charge and time (find current)

• Q

• I

• =

• t

• ÷

Match the term with its unit

• Amps, A

• Charge, Q measured in

• Coulombs, C

• Time, t measured in

• Seconds, s

• Current, I measured in

How many amps are flowing through the circuit if 1 C passes in 1 second? I = Q ÷ t

Q is in Coulombs and t is in seconds

Mathematical Equivalence

ON

How many amps are flowing through the circuit if 2 C passes in 2 seconds ? I = Q ÷ t

Q is in Coulombs and t is in seconds

Mathematical Equivalence

OFF