Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 321 · 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 of these is measured in ohms (Ω)? (a) resistance (b) power (c) the push of a cell (d) voltage
2. 2.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
3. 3.True or false: the voltmeter measures voltage. (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.📏 How many ohms (Ω) is 8.4 kΩ?
9. 9.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
10. 10.📏 How many milliamperes (mA) is 2.45 A?
11. 11.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) how much a part resists (d) the push of a cell
12. 12.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
13. 13.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.True or false: the voltmeter is joined across a part. (a) False (b) True
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.True or false: power is measured in watts (W). (a) False (b) True
18. 18.📏 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
19. 19.True or false: the voltmeter measures current. (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
21. 21.True or false: current is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many amperes (A) is 150 mA? =
23. 23.📏 How many milliamperes (mA) is 0.1 A?
24. 24.📏 How many amperes (A) is 2480 mA? =
25. 25.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
26. 26.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.📏 How many watts (W) is 4.2 kW?
29. 29.📏 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
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
31. 31.📏 How many amperes (A) is 2160 mA? =
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
33. 33.📏 How many ohms (Ω) is 3.2 kΩ?
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
35. 35.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
36. 36.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.📏 How many amperes (A) is 740 mA? =
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)

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