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Power and Work Done OALH DSP
By David Spratt
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Last updated about 5 years ago
34 questions
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Do Now
Question 1
1.
1.Name the two types of circuits.
Question 2
2.
How is current distributed through components in series?
Question 3
3.
3. What is the most common disadvantage of renewable energy resources?
Question 4
4.
Define an anomalous result.
Question 5
5.
Convert 2.5kHz to Hz
Question 6
6.
Describe how the current is distributed through components in parallel.
Key Knowledge LCWC
Question 7
7.
What is (electrical) power?
Question 8
8.
What are the units for power?
Question 9
9.
What is the equation linking power, current and potential difference?
Question 10
10.
What is the equation linking power, current and resistance?
Question 11
11.
What is (electrical) power?
Question 12
12.
What are the units for power?
Question 13
13.
What is the equation linking power, current and potential difference?
Question 14
14.
What is the equation linking power, current and resistance?
Recall Quiz
Question 15
15.
What are the units for power?
Question 16
16.
1.
Define electrical power
Question 17
17.
Write out the equation linking power (P) current (I) and potential difference (V)
Question 18
18.
State the units for current, potential difference and power
YOU DO
Question 19
19.
A 12 V power supply provides a 50mA current through a circuit. Calculate the power
Question 20
20.
1. What is the formula linking power, current and voltage?
Question 21
21.
2. Rearrange this formula to calculate current.
Question 22
22.
3. Rearrange this formula to calculate voltage.
Question 23
23.
4. A kettle has a current of 10A and a p.d. of 230V. Calculate the power output.
Question 24
24.
5. A TV has a current of 80A and a p.d. of 230V. Calculate the power output.
Question 25
25.
6. A toaster has a current of 20A and a p.d. of 230V. Calculate the power output.
Question 26
26.
7. The heating element in a kettle produces an output of 1200W using mains electricity. Calculate the current flowing through it.
Question 27
27.
8. A TV produces an output of 5000W using mains electricity. Calculate the current flowing through it.
Question 28
28.
9. A toaster produces an output of 2.5kW using mains electricity. Calculate the current flowing through it.
Plenary
Question 29
29.
1.Write two equations to calculate power
Question 30
30.
State units for power
Question 31
31.
Write equation linking potential difference, current and resistance
Question 32
32.
1.State units for resistance
Question 33
33.
State units for potential difference
Question 34
34.
States units for current