Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 240 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) current (d) energy used each second
2. 2.True or false: power is measured in amperes (A). (a) False (b) True
3. 3.📏 How many watts (W) is 2.2 kW?
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
6. 6.True or false: resistance is measured in watts (W). (a) False (b) True
7. 7.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) current (d) power
10. 10.True or false: the ammeter is joined across a part. (a) True (b) False
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) voltage (d) the flow of charge
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
15. 15.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
16. 16.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.📏 How many watts (W) is 4.5 kW?
19. 19.Which of these is measured in watts (W)? (a) resistance (b) power (c) current (d) the push of a cell
20. 20.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
21. 21.📏 How many kilowatts (kW) is 500 W? =
22. 22.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
23. 23.📏 How many watts (W) is 1.7 kW?
24. 24.📏 How many amperes (A) is 360 mA? =
25. 25.📏 How many watts (W) is 0.7 kW?
26. 26.True or false: the push of a cell is measured in volts (V). (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 8 kΩ?
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
31. 31.True or false: the ammeter is joined in series. (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 4050 W? =
33. 33.📏 How many amperes (A) is 140 mA? =
34. 34.📏 How many milliamperes (mA) is 0.36 A?
35. 35.📏 How many ohms (Ω) is 9.6 kΩ?
36. 36.📏 How many amperes (A) is 1320 mA? =
37. 37.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) how much a part resists
38. 38.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
39. 39.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
40. 40.📏 How many ohms (Ω) is 4.1 kΩ?

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