Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 259 · 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 flow of charge is measured in watts (W). (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
3. 3.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) how much a part resists (d) current
5. 5.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
6. 6.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.📏 How many milliamperes (mA) is 1.68 A?
13. 13.Which of these is measured in volts (V)? (a) current (b) voltage (c) the flow of charge (d) energy used each second
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.True or false: the push of a cell is measured in volts (V). (a) False (b) True
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
17. 17.📏 How many milliamperes (mA) is 0.1 A?
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
19. 19.📏 How many amperes (A) is 920 mA? =
20. 20.📏 How many milliamperes (mA) is 2.47 A?
21. 21.📏 How many watts (W) is 0.7 kW?
22. 22.📏 How many amperes (A) is 480 mA? =
23. 23.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) power (d) how much a part resists
24. 24.📏 How many amperes (A) is 1080 mA? =
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
26. 26.📏 How many ohms (Ω) is 1.7 kΩ?
27. 27.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
28. 28.📏 How many milliamperes (mA) is 1.9 A?
29. 29.📏 How many milliamperes (mA) is 1.82 A?
30. 30.📏 How many kilowatts (kW) is 200 W? =
31. 31.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
32. 32.📏 How many amperes (A) is 1310 mA? =
33. 33.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
34. 34.True or false: the voltmeter is joined across a part. (a) True (b) False
35. 35.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
36. 36.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
37. 37.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
38. 38.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
39. 39.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
40. 40.True or false: the ammeter measures current. (a) False (b) True

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