Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 833 · 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.📏 How many amperes (A) is 1860 mA? =
3. 3.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.True or false: the voltmeter is joined across a part. (a) False (b) True
7. 7.True or false: voltage is measured in volts (V). (a) False (b) True
8. 8.📏 How many milliamperes (mA) is 0.54 A?
9. 9.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) current (d) power
10. 10.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) current (d) power
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
13. 13.📏 How many ohms (Ω) is 4 kΩ?
14. 14.True or false: the ammeter measures current. (a) True (b) False
15. 15.📏 How many kilowatts (kW) is 750 W? =
16. 16.📏 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
17. 17.📏 How many amperes (A) is 1120 mA? =
18. 18.📏 How many kilowatts (kW) is 450 W? =
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
20. 20.True or false: resistance is measured in volts (V). (a) False (b) True
21. 21.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
22. 22.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the push of a cell (d) how much a part resists
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
25. 25.📏 How many kilowatts (kW) is 4250 W? =
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 How many watts (W) is 4.1 kW?
28. 28.True or false: the voltmeter measures voltage. (a) True (b) False
29. 29.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
30. 30.📏 How many kilowatts (kW) is 2850 W? =
31. 31.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
32. 32.True or false: the push of a cell is measured in volts (V). (a) False (b) True
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
34. 34.📏 How many kilo-ohms (kΩ) is 200 Ω? =
35. 35.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) resistance
36. 36.True or false: energy used each second is measured in volts (V). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 1850 W? =
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
40. 40.True or false: the push of a cell is measured in amperes (A). (a) True (b) False

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