Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 490 · 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) ohm (Ω) (c) ampere (A) (d) watt (W)
2. 2.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
3. 3.📏 How many watts (W) is 3.7 kW?
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) energy used each second (d) voltage
7. 7.📏 How many kilowatts (kW) is 1600 W? =
8. 8.📏 How many watts (W) is 3.2 kW?
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
10. 10.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) the push of a cell (d) how much a part resists
11. 11.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
13. 13.📏 How many ohms (Ω) is 8.6 kΩ?
14. 14.True or false: current is measured in volts (V). (a) False (b) True
15. 15.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
17. 17.True or false: the voltmeter is joined across a part. (a) False (b) True
18. 18.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
19. 19.📏 How many watts (W) is 3.4 kW?
20. 20.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) resistance (d) how much a part resists
21. 21.📏 How many watts (W) is 2.1 kW?
22. 22.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) the push of a cell
23. 23.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
24. 24.📏 How many ohms (Ω) is 3.2 kΩ?
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.📏 How many kilowatts (kW) is 2100 W? =
27. 27.📏 How many watts (W) is 4.4 kW?
28. 28.True or false: voltage is measured in amperes (A). (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 3200 W? =
30. 30.📏 How many amperes (A) is 2450 mA? =
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
32. 32.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
33. 33.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) voltage (d) the push of a cell
34. 34.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
36. 36.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
37. 37.📏 How many amperes (A) is 870 mA? =
38. 38.📏 How many watts (W) is 0.4 kW?
39. 39.📏 How many ohms (Ω) is 7.7 kΩ?
40. 40.True or false: the push of a cell is measured in volts (V). (a) True (b) False

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