Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 324 · 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.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
2. 2.True or false: the ammeter is joined across a part. (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 0.02 A?
4. 4.True or false: the ammeter measures voltage. (a) False (b) True
5. 5.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
6. 6.📏 How many amperes (A) is 2350 mA? =
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
8. 8.📏 How many milliamperes (mA) is 1.24 A?
9. 9.True or false: resistance is measured in amperes (A). (a) True (b) False
10. 10.True or false: the voltmeter measures voltage. (a) True (b) False
11. 11.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
12. 12.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) resistance (d) voltage
13. 13.True or false: the ammeter measures current. (a) True (b) False
14. 14.True or false: the voltmeter is joined in series. (a) True (b) False
15. 15.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) how much a part resists (d) power
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) resistance (d) voltage
18. 18.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) resistance (d) voltage
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.📏 How many amperes (A) is 700 mA? =
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.📏 How many amperes (A) is 120 mA? =
23. 23.📏 How many amperes (A) is 2070 mA? =
24. 24.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
26. 26.True or false: voltage is measured in amperes (A). (a) True (b) False
27. 27.📏 How many ohms (Ω) is 8.6 kΩ?
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
29. 29.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) the flow of charge (d) energy used each second
30. 30.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
31. 31.📏 How many ohms (Ω) is 8.1 kΩ?
32. 32.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
33. 33.📏 How many amperes (A) is 690 mA? =
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
36. 36.True or false: voltage is measured in watts (W). (a) False (b) True
37. 37.True or false: the voltmeter is joined across a part. (a) True (b) False
38. 38.True or false: the flow of charge is measured in watts (W). (a) False (b) True
39. 39.📏 How many amperes (A) is 400 mA? =
40. 40.📏 How many ohms (Ω) is 6.3 kΩ?

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