Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 422 · 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 push of a cell is measured in volts (V). (a) False (b) True
2. 2.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
5. 5.True or false: the ammeter is joined in series. (a) False (b) True
6. 6.📏 How many amperes (A) is 1600 mA? =
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 How many kilowatts (kW) is 250 W? =
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
10. 10.📏 How many kilowatts (kW) is 4600 W? =
11. 11.📏 How many milliamperes (mA) is 2.48 A?
12. 12.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) energy used each second (d) the flow of charge
13. 13.📏 How many milliamperes (mA) is 0.82 A?
14. 14.True or false: current is measured in ohms (Ω). (a) True (b) False
15. 15.True or false: voltage is measured in watts (W). (a) False (b) True
16. 16.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) current (d) the flow of charge
17. 17.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
18. 18.📏 How many watts (W) is 1.3 kW?
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
23. 23.📏 How many watts (W) is 1.9 kW?
24. 24.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) how much a part resists
25. 25.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) power (d) current
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
27. 27.📏 How many amperes (A) is 450 mA? =
28. 28.True or false: the flow of charge is measured in volts (V). (a) False (b) True
29. 29.True or false: the ammeter measures current. (a) True (b) False
30. 30.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
33. 33.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
37. 37.True or false: current is measured in amperes (A). (a) False (b) True
38. 38.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
39. 39.📏 How many ohms (Ω) is 3.2 kΩ?
40. 40.📏 How many kilo-ohms (kΩ) is 7100 Ω? =

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