Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 895 · 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: voltage is measured in ohms (Ω). (a) True (b) False
2. 2.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) the push of a cell (d) energy used each second
3. 3.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) power (d) how much a part resists
4. 4.📏 How many amperes (A) is 1470 mA? =
5. 5.📏 How many ohms (Ω) is 4.4 kΩ?
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
8. 8.📏 How many watts (W) is 2.4 kW?
9. 9.True or false: the voltmeter is joined in series. (a) False (b) True
10. 10.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) power
11. 11.📏 How many amperes (A) is 2290 mA? =
12. 12.True or false: the ammeter is joined across a part. (a) True (b) False
13. 13.📏 How many watts (W) is 0.2 kW?
14. 14.📏 How many ohms (Ω) is 6.6 kΩ?
15. 15.📏 How many amperes (A) is 1650 mA? =
16. 16.📏 How many milliamperes (mA) is 0.66 A?
17. 17.True or false: the ammeter measures current. (a) True (b) False
18. 18.True or false: current is measured in volts (V). (a) True (b) False
19. 19.📏 How many ohms (Ω) is 2.7 kΩ?
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
21. 21.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
22. 22.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) the push of a cell (d) current
23. 23.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
28. 28.📏 How many kilowatts (kW) is 4550 W? =
29. 29.True or false: energy used each second is measured in watts (W). (a) False (b) True
30. 30.True or false: the ammeter is joined in series. (a) True (b) False
31. 31.📏 How many amperes (A) is 2500 mA? =
32. 32.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
34. 34.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
35. 35.True or false: the flow of charge is measured in watts (W). (a) True (b) False
36. 36.📏 How many amperes (A) is 1610 mA? =
37. 37.True or false: energy used each second is measured in amperes (A). (a) True (b) False
38. 38.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
39. 39.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) energy used each second (d) the flow of charge
40. 40.📏 How many amperes (A) is 1080 mA? =

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