1.Name the two types of circuits.
How is current distributed through components in series?
3. What is the most common disadvantage of renewable energy resources?
Define an anomalous result.
Convert 2.5kHz to Hz
Describe how the current is distributed through components in parallel.
What is (electrical) power?
What are the units for power?
What is the equation linking power, current and potential difference?
What is the equation linking power, current and resistance?
What is (electrical) power?
What are the units for power?
What is the equation linking power, current and potential difference?
What is the equation linking power, current and resistance?
What are the units for power?
1.Define electrical power
Write out the equation linking power (P) current (I) and potential difference (V)
State the units for current, potential difference and power
1. What is the formula linking power, current and voltage?
1. Rearrange this formula to calculate current.
1. Rearrange this formula to calculate voltage.
1. What is the formula linking power, current and resistance?
7. A kettle has a current of 10A and a p.d. of 230V. Calculate the power output.
8. A TV has a current of 80A and a p.d. of 230V. Calculate the power output.
9. A toaster has a current of 20A and a p.d. of 230V. Calculate the power output.
10. Work out the resistance for the kettle from question 7.
The heating element in a kettle produces an output of 1200W using mains electricity. Calculate the current flowing through it.
A TV produces an output of 5000W using mains electricity. Calculate the current flowing through it.
A toaster produces an output of 2.5kW using mains electricity. Calculate the current flowing through it.
If the resistance of a kettle is 20Ω, with a power output of 2.2kW, what is the current flowing through it?
1.Write two equations to calculate power
State units for power
Write equation linking potential difference, current and resistance
1.State units for resistance
State units for potential difference
States units for current