Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 327 · 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: current is measured in amperes (A). (a) False (b) True
2. 2.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.True or false: the voltmeter is joined across a part. (a) True (b) False
5. 5.📏 How many amperes (A) is 1930 mA? =
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
8. 8.True or false: the ammeter is joined in series. (a) False (b) True
9. 9.📏 How many milliamperes (mA) is 0.73 A?
10. 10.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) resistance (d) voltage
11. 11.Which of these is measured in amperes (A)? (a) current (b) power (c) the push of a cell (d) resistance
12. 12.True or false: the flow of charge is measured in watts (W). (a) False (b) True
13. 13.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
14. 14.True or false: resistance is measured in ohms (Ω). (a) False (b) True
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
19. 19.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) voltage
20. 20.📏 How many watts (W) is 1.8 kW?
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
22. 22.📏 How many amperes (A) is 1990 mA? =
23. 23.📏 How many kilowatts (kW) is 1350 W? =
24. 24.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.📏 How many ohms (Ω) is 1.6 kΩ?
27. 27.📏 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
28. 28.True or false: the ammeter measures current. (a) True (b) False
29. 29.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the flow of charge (d) voltage
30. 30.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
31. 31.📏 How many amperes (A) is 1510 mA? =
32. 32.📏 How many kilowatts (kW) is 4700 W? =
33. 33.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
35. 35.📏 How many milliamperes (mA) is 1.83 A?
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many watts (W) is 0.6 kW?
38. 38.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
40. 40.True or false: the voltmeter measures voltage. (a) True (b) False

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