Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 537 · 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 current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 How many ohms (Ω) is 7.6 kΩ?
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
5. 5.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) voltage
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
7. 7.True or false: energy used each second is measured in amperes (A). (a) True (b) False
8. 8.📏 How many kilowatts (kW) is 1950 W? =
9. 9.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) the push of a cell (d) resistance
10. 10.📏 How many kilowatts (kW) is 350 W? =
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.Which of these is measured in watts (W)? (a) current (b) resistance (c) the flow of charge (d) energy used each second
14. 14.True or false: the flow of charge is measured in watts (W). (a) True (b) False
15. 15.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.True or false: voltage is measured in ohms (Ω). (a) True (b) False
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) voltage (b) power (c) the flow of charge (d) how much a part resists
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
23. 23.📏 How many amperes (A) is 1090 mA? =
24. 24.📏 How many ohms (Ω) is 3.6 kΩ?
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
26. 26.True or false: voltage is measured in volts (V). (a) False (b) True
27. 27.True or false: the voltmeter is joined in series. (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 2.45 A?
29. 29.True or false: the flow of charge is measured in volts (V). (a) True (b) False
30. 30.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
31. 31.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) energy used each second (d) the push of a cell
32. 32.True or false: power is measured in volts (V). (a) True (b) False
33. 33.📏 How many watts (W) is 3.6 kW?
34. 34.True or false: resistance is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many amperes (A) is 2220 mA? =
36. 36.📏 How many amperes (A) is 260 mA? =
37. 37.📏 How many watts (W) is 2.1 kW?
38. 38.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
39. 39.True or false: the push of a cell is measured in volts (V). (a) True (b) False
40. 40.📏 How many amperes (A) is 2480 mA? =

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