Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 228 · 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.📏 How many ohms (Ω) is 6.7 kΩ?
2. 2.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.True or false: the ammeter measures current. (a) True (b) False
5. 5.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
6. 6.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) voltage (d) how much a part resists
7. 7.📏 How many kilowatts (kW) is 800 W? =
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
9. 9.📏 How many ohms (Ω) is 9.3 kΩ?
10. 10.📏 How many milliamperes (mA) is 0.81 A?
11. 11.📏 How many ohms (Ω) is 1.6 kΩ?
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
13. 13.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
14. 14.📏 How many kilowatts (kW) is 3750 W? =
15. 15.📏 How many amperes (A) is 2030 mA? =
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.True or false: the voltmeter measures voltage. (a) True (b) False
18. 18.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.📏 How many kilowatts (kW) is 2050 W? =
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.True or false: resistance is measured in volts (V). (a) False (b) True
22. 22.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) resistance (d) the push of a cell
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
25. 25.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) the push of a cell
26. 26.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
27. 27.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
28. 28.📏 How many milliamperes (mA) is 2.12 A?
29. 29.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
30. 30.📏 How many ohms (Ω) is 5.2 kΩ?
31. 31.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) the push of a cell
32. 32.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.True or false: current is measured in volts (V). (a) False (b) True
35. 35.True or false: the ammeter is joined across a part. (a) False (b) True
36. 36.True or false: the voltmeter measures current. (a) False (b) True
37. 37.📏 How many kilowatts (kW) is 2150 W? =
38. 38.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
39. 39.📏 How many kilowatts (kW) is 4550 W? =
40. 40.📏 How many watts (W) is 2 kW?

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