Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 545 · 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.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
2. 2.📏 How many milliamperes (mA) is 1.97 A?
3. 3.📏 How many milliamperes (mA) is 1.44 A?
4. 4.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
5. 5.True or false: voltage is measured in volts (V). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) voltage (d) resistance
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.True or false: the ammeter is joined in series. (a) True (b) False
13. 13.Which of these is measured in amperes (A)? (a) current (b) voltage (c) power (d) the push of a cell
14. 14.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.True or false: the ammeter measures current. (a) False (b) True
17. 17.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
18. 18.📏 How many watts (W) is 4.1 kW?
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
20. 20.True or false: the voltmeter is joined in series. (a) False (b) True
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
22. 22.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.📏 How many watts (W) is 0.1 kW?
24. 24.True or false: current is measured in volts (V). (a) False (b) True
25. 25.📏 How many ohms (Ω) is 6.8 kΩ?
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 2.37 A?
29. 29.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
30. 30.📏 How many milliamperes (mA) is 2.21 A?
31. 31.📏 How many kilowatts (kW) is 3250 W? =
32. 32.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
33. 33.📏 How many ohms (Ω) is 0.6 kΩ?
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.True or false: the push of a cell is measured in watts (W). (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many amperes (A) is 850 mA? =
38. 38.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) current (d) power
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
40. 40.📏 How many kilowatts (kW) is 3400 W? =

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