1. ALL THE
EQUATIONS
Higher level

2. In the following slides each of the negative
charge symbols represents a charge of
1Coulomb and NOT 1 electron.
This has been done in an attempt to make the
relationships easier to understand.

3. - - - - - - - - - - - - - - - ? 3A How much charge flows
Charge = current x time
(Coulombs = amps x seconds) - - - - - ? 3A -
How much charge flows
through the ammeter
(a) in 5 seconds?
(b) in one minute?
(c) in one hour? - -
15 Coulombs - -
180 Coulombs - -
Coulombs - - -

4. - - - - - - - - ? 4A How much charge flows through the ammeter
Charge = current x time
(Coulombs=ampsxseconds) - - ? 4A - - -
How much charge flows through the ammeter
(a) in half a minute?
(b) in 10 minutes?
(c) in 2 hours?
120 Coulombs
2 400 Coulombs
Coulombs

5. - - - - - - - - ?A 8Coulombs of charge flows in 4 seconds.
Charge = current x time
(Coulombs = amps x seconds) - - - - - ?A - - -
8Coulombs of charge flows in 4 seconds.
What current is flowing?
2 Amps

6. - - - - - - - - - - - - - - - Series rules and
p.d = current x resistance
(Volts) (Amps) (Ohms) - - - - - ? 3A -
24V supply - - - - ? ? - -
2 Ohms
6 Ohms - - -

7. - - - - - - - - - - - - - - - Power = pd x current
(Watts) (volts) (amps) - - - - - ? 3A -
24V supply - - - - 6V
18V - - - - -

8. (Joules) (Coulombs) (volts)
Energy = charge x pd
(Joules) (Coulombs) (volts)
Pd = Volts
Charge = 8 Coulombs
Energy = Joules
1 600 kJ
1.6MJ
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9. C A s V A O W J A J V C charge = current x time
(Coulombs) (Amps) (secs) A s V
P D = current x resistance
(Volts) (Amps) (Ohms) A O W
power = P D x current
(Watts) (Joules) (Amps) J A J
energy = P D x Charge
(Joules) (Volts) (Coulombs) V C

10. END