Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 982 · 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 unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
5. 5.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.True or false: power is measured in ohms (Ω). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.📏 How many milliamperes (mA) is 1.73 A?
10. 10.Which of these is measured in volts (V)? (a) power (b) current (c) the flow of charge (d) voltage
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
12. 12.True or false: resistance is measured in volts (V). (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
14. 14.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) power (d) current
15. 15.📏 How many milliamperes (mA) is 1.83 A?
16. 16.True or false: the voltmeter is joined in series. (a) True (b) False
17. 17.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
18. 18.📏 How many milliamperes (mA) is 2.85 A?
19. 19.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 How many watts (W) is 4.9 kW?
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
22. 22.True or false: voltage is measured in watts (W). (a) True (b) False
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 800 W? =
25. 25.📏 How many ohms (Ω) is 9.4 kΩ?
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
27. 27.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the flow of charge (d) power
28. 28.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
29. 29.True or false: current is measured in volts (V). (a) True (b) False
30. 30.True or false: power is measured in watts (W). (a) False (b) True
31. 31.True or false: the ammeter measures voltage. (a) False (b) True
32. 32.True or false: voltage is measured in amperes (A). (a) True (b) False
33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 1.98 A?
35. 35.📏 How many kilowatts (kW) is 1000 W? =
36. 36.📏 How many watts (W) is 0.2 kW?
37. 37.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
38. 38.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
39. 39.📏 How many amperes (A) is 1860 mA? =
40. 40.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) power

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