Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 875 · 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.📏 How many watts (W) is 2.4 kW?
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.Which of these is measured in volts (V)? (a) power (b) current (c) resistance (d) voltage
4. 4.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the push of a cell (d) current
5. 5.📏 How many ohms (Ω) is 8.1 kΩ?
6. 6.True or false: the voltmeter measures voltage. (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
9. 9.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: the ammeter is joined in series. (a) True (b) False
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
12. 12.True or false: energy used each second is measured in volts (V). (a) False (b) True
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.📏 How many amperes (A) is 2120 mA? =
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
18. 18.📏 How many ohms (Ω) is 3.4 kΩ?
19. 19.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) how much a part resists (d) current
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
21. 21.📏 How many milliamperes (mA) is 0.44 A?
22. 22.True or false: the ammeter measures current. (a) False (b) True
23. 23.True or false: voltage is measured in amperes (A). (a) False (b) True
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
25. 25.📏 How many ohms (Ω) is 4.3 kΩ?
26. 26.True or false: current is measured in ohms (Ω). (a) True (b) False
27. 27.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) the flow of charge (d) the push of a cell
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many amperes (A) is 1950 mA? =
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 2770 mA? =
32. 32.True or false: current is measured in amperes (A). (a) True (b) False
33. 33.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
34. 34.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
36. 36.📏 How many milliamperes (mA) is 1.5 A?
37. 37.📏 How many kilowatts (kW) is 1650 W? =
38. 38.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
39. 39.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) power (d) current
40. 40.📏 How many watts (W) is 2.2 kW?

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