Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 941 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
2. 2.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) power (d) how much a part resists
3. 3.📏 How many milliamperes (mA) is 1.27 A?
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
6. 6.📏 How many ohms (Ω) is 1.2 kΩ?
7. 7.True or false: the voltmeter measures voltage. (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 How many milliamperes (mA) is 2.61 A?
10. 10.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) resistance (d) voltage
11. 11.📏 How many ohms (Ω) is 4 kΩ?
12. 12.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 5.8 kΩ?
14. 14.📏 How many ohms (Ω) is 1.9 kΩ?
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
18. 18.True or false: current is measured in amperes (A). (a) False (b) True
19. 19.📏 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
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
23. 23.True or false: the flow of charge is measured in watts (W). (a) True (b) False
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.True or false: the voltmeter is joined in series. (a) True (b) False
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
27. 27.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
30. 30.📏 How many milliamperes (mA) is 0.25 A?
31. 31.📏 How many watts (W) is 4.3 kW?
32. 32.📏 How many amperes (A) is 890 mA? =
33. 33.True or false: the ammeter measures current. (a) False (b) True
34. 34.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) energy used each second (d) power
35. 35.📏 How many milliamperes (mA) is 2.11 A?
36. 36.📏 How many watts (W) is 2.4 kW?
37. 37.📏 How many milliamperes (mA) is 0.78 A?
38. 38.📏 How many kilowatts (kW) is 2000 W? =
39. 39.📏 How many watts (W) is 1.4 kW?
40. 40.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) energy used each second

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