Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 674 · 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.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
2. 2.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
3. 3.True or false: energy used each second is measured in amperes (A). (a) True (b) False
4. 4.📏 How many milliamperes (mA) is 1.58 A?
5. 5.True or false: the voltmeter is joined across a part. (a) True (b) False
6. 6.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
9. 9.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
10. 10.Which of these is measured in volts (V)? (a) current (b) power (c) voltage (d) resistance
11. 11.📏 How many amperes (A) is 40 mA? =
12. 12.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
13. 13.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) energy used each second
16. 16.True or false: the ammeter is joined across a part. (a) True (b) False
17. 17.📏 How many watts (W) is 3.7 kW?
18. 18.📏 How many kilowatts (kW) is 650 W? =
19. 19.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) energy used each second (d) current
20. 20.📏 How many milliamperes (mA) is 1.09 A?
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 0.96 A?
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) current (d) energy used each second
26. 26.📏 How many ohms (Ω) is 9.7 kΩ?
27. 27.📏 How many watts (W) is 0.9 kW?
28. 28.True or false: resistance is measured in watts (W). (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
30. 30.True or false: voltage is measured in ohms (Ω). (a) True (b) False
31. 31.True or false: the voltmeter is joined in series. (a) True (b) False
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 600 W? =
35. 35.True or false: the push of a cell is measured in watts (W). (a) True (b) False
36. 36.True or false: current is measured in amperes (A). (a) False (b) True
37. 37.📏 How many kilowatts (kW) is 1900 W? =
38. 38.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) current (d) power
39. 39.📏 How many ohms (Ω) is 5.4 kΩ?
40. 40.📏 How many amperes (A) is 2170 mA? =

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