Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 958 · 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 volts (V)? (a) energy used each second (b) the push of a cell (c) resistance (d) the flow of charge
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 How many milliamperes (mA) is 0.05 A?
4. 4.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
5. 5.📏 How many kilowatts (kW) is 2050 W? =
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.True or false: the voltmeter measures voltage. (a) False (b) True
8. 8.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) the push of a cell (d) power
9. 9.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) current (d) the push of a cell
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
14. 14.📏 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
15. 15.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
16. 16.📏 How many amperes (A) is 1860 mA? =
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.📏 How many kilowatts (kW) is 2900 W? =
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 How many watts (W) is 0.7 kW?
21. 21.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) how much a part resists
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
23. 23.📏 How many milliamperes (mA) is 0.74 A?
24. 24.True or false: the ammeter is joined across a part. (a) False (b) True
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 How many milliamperes (mA) is 0.11 A?
27. 27.📏 How many amperes (A) is 380 mA? =
28. 28.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) voltage (d) current
29. 29.True or false: resistance is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many amperes (A) is 300 mA? =
31. 31.📏 How many milliamperes (mA) is 0.77 A?
32. 32.True or false: voltage is measured in watts (W). (a) True (b) False
33. 33.True or false: the ammeter measures voltage. (a) False (b) True
34. 34.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
35. 35.📏 How many milliamperes (mA) is 0.83 A?
36. 36.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) the flow of charge (d) current
37. 37.📏 How many amperes (A) is 2850 mA? =
38. 38.True or false: the ammeter measures current. (a) True (b) False
39. 39.True or false: current is measured in ohms (Ω). (a) True (b) False
40. 40.True or false: the ammeter is joined in series. (a) True (b) False

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