Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 892 · 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: the voltmeter is joined across a part. (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the push of a cell (d) how much a part resists
5. 5.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
6. 6.📏 How many kilo-ohms (kΩ) is 400 Ω? =
7. 7.📏 How many amperes (A) is 1880 mA? =
8. 8.True or false: the flow of charge is measured in volts (V). (a) False (b) True
9. 9.True or false: the voltmeter measures current. (a) False (b) True
10. 10.📏 How many kilo-ohms (kΩ) is 800 Ω? =
11. 11.📏 How many kilowatts (kW) is 4100 W? =
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
13. 13.📏 How many watts (W) is 0.7 kW?
14. 14.📏 How many ohms (Ω) is 3 kΩ?
15. 15.True or false: power is measured in amperes (A). (a) False (b) True
16. 16.📏 How many amperes (A) is 2730 mA? =
17. 17.📏 How many ohms (Ω) is 0.8 kΩ?
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
19. 19.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) the push of a cell (d) resistance
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
21. 21.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
22. 22.📏 How many amperes (A) is 380 mA? =
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 How many amperes (A) is 1590 mA? =
25. 25.📏 How many amperes (A) is 2360 mA? =
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
27. 27.📏 How many watts (W) is 5 kW?
28. 28.True or false: voltage is measured in volts (V). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
31. 31.📏 How many milliamperes (mA) is 2.06 A?
32. 32.📏 How many amperes (A) is 150 mA? =
33. 33.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) resistance
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
35. 35.📏 How many amperes (A) is 2440 mA? =
36. 36.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
37. 37.📏 How many ohms (Ω) is 8.6 kΩ?
38. 38.True or false: power is measured in watts (W). (a) True (b) False
39. 39.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
40. 40.📏 How many kilo-ohms (kΩ) is 4800 Ω? =

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