# V=IR, Q=IT, P=VI, E=PT ```Lesson Title
V=IR, Q=IT, P=VI, E=PT
Learning
Outcomes
• Define the quantities in given equations (G-D)
• Select equations to calculate quantities(D-B)
• Explain potential difference in terms of charge and
energy (B-A*)
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
Define the following:
V
I
R
Q
I
T
P
V
I
E
P
T
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
Example:
V is voltage and is measured in volts. The volt
tells you how much energy each amount of
charge has. Energy is measured in joules and
charge is measured in coulombs. This means the
volt is the amount of joules for every coulomb.
Volts = joules per coulomb
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
I is current, how many charges (Q) flow per
second. It is measured in amperes, shortened
to amps (A).
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
R is resistance, it can be used to control the size
of the current in a circuit. It is measured in
ohms. The electrons feel a resistive force as
they try to move through a circuit.
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
Q is charge and is measured in coulombs (C). It
is a measure of how much charge something
has. An electron has a charge of -1.6x10-19 C.
Charge can be positive or negative.
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
T is measured in seconds (s).
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
P is power. It is measured in Watts (W) or
Joules per second (J/s or Js-1). It is the rate of
flow of energy.
Lesson Title
VIR,QIT,PVI,EPT
Learning
Outcomes
Define the quantities in given equations (G-D)
Select equations to calculate quantities(D-B)
Explain potential difference in terms of charge and
energy (B-A*)
E is measured in Joules (J). It is a measure of
the capacity of something to do work.
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