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Electrical Units Match-Up & Equation Recall

Match electrical units correctly with symbols like current (I), voltage (V), resistance (R), power (P), charge (Q), energy (E). Recall symbol equations for electricity concepts. Practice parallel and series circuits. Solve power and energy problems.

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Electrical Units Match-Up & Equation Recall

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  1. ELECTRICAL UNITS Match up correctly: CURRENT (I) Joules Ω VOLTAGE (V) Ohms A RESISTANCE (R) Coulombs J POWER (P) Volts or Joules/coulomb W CHARGE (Q) Amps or Coulombs/second V ENERGY (E) Watts or Joules/second C Once you have done this – write down as many symbol equations as you can remember for this unit

  2. ELECTRICAL UNITS Match up correctly: CURRENT (I) Joules Ω VOLTAGE (V) Ohms A RESISTANCE (R) Coulombs J POWER (P) Volts or Joules/coulomb W CHARGE (Q) Amps or Coulombs/second V ENERGY (E) Watts or Joules/second C Once you have done this – write down as many symbol equations as you can remember for this unit

  3. The Equations V I x R • Q = I x t • V = C x R • E = V x Q • E = P x t • P = V X I E V x Q Q I x t E P x t P V x I Where do they all come from?

  4. Electricity • Revise the concept of charge and current • Revise the concept of voltage and energy • Revise the concept of Parallel and Series Circuits • Back to the equations

  5. Q Ix t Q = Ix t • Charge = Current x Time Back to the equations

  6. V I x R V = Ix R • Voltage = Current x Resistance • Remember VCR Back to the equations

  7. E V x Q E = V x Q • Energy = Voltage (pd) x Charge • One Volt = One Joule given to One Coulomb of Charge Back to the equations

  8. E P x t E = P x t • Energy = Power x Time • The Power is the rate at which energy is transferred A Kettle uses 2300 Watts of power. If it is switched on for 5 minutes how much energy does it use? Back to the equations

  9. P V x I P = V x I • Power = Voltage x Current • Increasing Voltage or Current means the rate of energy transfer increases A Kettle uses 2300 Watts of power. If it is switched on for 5 minutes how much energy does it use? The Kettle runs of mains electricity, What current does the kettle draw? Back to the equations

  10. Parallel and Series Circuits

  11. GAME 1 GAME 2 Who wants to be a millionaire

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