Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 605 · 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.True or false: energy used each second is measured in amperes (A). (a) False (b) True
2. 2.📏 How many amperes (A) is 110 mA? =
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) resistance (d) how much a part resists
5. 5.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) resistance (d) power
7. 7.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
8. 8.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
10. 10.True or false: energy used each second is measured in volts (V). (a) False (b) True
11. 11.📏 How many amperes (A) is 2770 mA? =
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (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: the flow of charge is measured in watts (W). (a) False (b) True
17. 17.📏 How many amperes (A) is 2950 mA? =
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.True or false: the flow of charge is measured in volts (V). (a) True (b) False
20. 20.📏 How many ohms (Ω) is 1.1 kΩ?
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) resistance (d) power
22. 22.📏 How many milliamperes (mA) is 2.85 A?
23. 23.📏 How many amperes (A) is 2020 mA? =
24. 24.📏 How many watts (W) is 3.1 kW?
25. 25.True or false: the voltmeter is joined in series. (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
27. 27.📏 How many ohms (Ω) is 7.5 kΩ?
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
30. 30.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
32. 32.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
35. 35.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
36. 36.📏 How many kilo-ohms (kΩ) is 4700 Ω? =
37. 37.True or false: voltage is measured in volts (V). (a) False (b) True
38. 38.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) power (d) energy used each second
39. 39.📏 How many milliamperes (mA) is 0.35 A?
40. 40.📏 How many kilowatts (kW) is 3900 W? =

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