Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 462 · 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: energy used each second is measured in ohms (Ω). (a) False (b) True
2. 2.📏 How many kilowatts (kW) is 2550 W? =
3. 3.True or false: power is measured in watts (W). (a) True (b) False
4. 4.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.True or false: the voltmeter is joined in series. (a) False (b) True
7. 7.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.📏 How many kilowatts (kW) is 3450 W? =
12. 12.True or false: energy used each second is measured in watts (W). (a) False (b) True
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
15. 15.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the push of a cell (d) resistance
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
22. 22.True or false: voltage is measured in amperes (A). (a) True (b) False
23. 23.True or false: resistance is measured in watts (W). (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) energy used each second (d) resistance
25. 25.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
26. 26.📏 How many watts (W) is 1.3 kW?
27. 27.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) energy used each second
28. 28.📏 How many amperes (A) is 590 mA? =
29. 29.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) power (d) energy used each second
30. 30.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many milliamperes (mA) is 1.92 A?
32. 32.📏 How many milliamperes (mA) is 2.48 A?
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
34. 34.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
35. 35.True or false: the flow of charge is measured in volts (V). (a) False (b) True
36. 36.📏 How many amperes (A) is 1940 mA? =
37. 37.Which of these is measured in watts (W)? (a) current (b) power (c) the flow of charge (d) the push of a cell
38. 38.📏 How many amperes (A) is 1190 mA? =
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)

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