Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 786 · 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 ammeter measures current. (a) True (b) False
2. 2.True or false: resistance is measured in amperes (A). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) power (d) resistance
6. 6.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) power (d) resistance
8. 8.True or false: the voltmeter measures current. (a) True (b) False
9. 9.True or false: the voltmeter is joined across a part. (a) False (b) True
10. 10.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
12. 12.📏 How many amperes (A) is 2480 mA? =
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 How many ohms (Ω) is 2 kΩ?
15. 15.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
18. 18.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
19. 19.📏 How many milliamperes (mA) is 1 A?
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 How many amperes (A) is 1940 mA? =
22. 22.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) power (d) resistance
23. 23.📏 How many milliamperes (mA) is 2.47 A?
24. 24.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 How many amperes (A) is 340 mA? =
26. 26.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 How many ohms (Ω) is 2.6 kΩ?
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
29. 29.📏 How many milliamperes (mA) is 0.04 A?
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) how much a part resists (d) voltage
32. 32.📏 How many kilowatts (kW) is 250 W? =
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
34. 34.True or false: the voltmeter is joined in series. (a) True (b) False
35. 35.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
36. 36.📏 How many amperes (A) is 1560 mA? =
37. 37.📏 How many kilowatts (kW) is 100 W? =
38. 38.📏 How many ohms (Ω) is 6.5 kΩ?
39. 39.📏 How many amperes (A) is 2130 mA? =
40. 40.📏 How many kilo-ohms (kΩ) is 2200 Ω? =

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