Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 108 · 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.True or false: the voltmeter measures voltage. (a) True (b) False
2. 2.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) energy used each second (d) how much a part resists
4. 4.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
5. 5.📏 How many milliamperes (mA) is 0.36 A?
6. 6.True or false: the push of a cell is measured in watts (W). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 How many milliamperes (mA) is 1.49 A?
10. 10.True or false: current is measured in ohms (Ω). (a) False (b) True
11. 11.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
12. 12.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) how much a part resists
13. 13.True or false: energy used each second is measured in watts (W). (a) True (b) False
14. 14.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 1.2 A?
16. 16.📏 How many ohms (Ω) is 2.5 kΩ?
17. 17.True or false: the ammeter measures voltage. (a) False (b) True
18. 18.Which of these is measured in volts (V)? (a) power (b) resistance (c) the flow of charge (d) voltage
19. 19.📏 How many kilowatts (kW) is 2850 W? =
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.Which of these is measured in amperes (A)? (a) current (b) resistance (c) how much a part resists (d) power
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
23. 23.True or false: resistance is measured in volts (V). (a) True (b) False
24. 24.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) how much a part resists (d) the flow of charge
25. 25.📏 How many watts (W) is 4.6 kW?
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
27. 27.True or false: the ammeter measures current. (a) True (b) False
28. 28.📏 How many amperes (A) is 1810 mA? =
29. 29.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
31. 31.📏 How many ohms (Ω) is 1.9 kΩ?
32. 32.📏 How many ohms (Ω) is 3.1 kΩ?
33. 33.True or false: resistance is measured in ohms (Ω). (a) False (b) True
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
35. 35.📏 How many watts (W) is 1.6 kW?
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.True or false: voltage is measured in watts (W). (a) False (b) True
39. 39.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
40. 40.True or false: current is measured in amperes (A). (a) True (b) False

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