Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 519 · 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 voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.📏 How many watts (W) is 3.9 kW?
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
5. 5.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.📏 How many ohms (Ω) is 9.7 kΩ?
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
9. 9.📏 How many ohms (Ω) is 9 kΩ?
10. 10.True or false: current is measured in watts (W). (a) False (b) True
11. 11.📏 How many amperes (A) is 1840 mA? =
12. 12.True or false: resistance is measured in ohms (Ω). (a) False (b) True
13. 13.True or false: power is measured in watts (W). (a) False (b) True
14. 14.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
15. 15.📏 How many kilowatts (kW) is 450 W? =
16. 16.Which of these is measured in watts (W)? (a) power (b) current (c) the push of a cell (d) resistance
17. 17.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) voltage (d) current
18. 18.True or false: the ammeter is joined in series. (a) False (b) True
19. 19.True or false: the ammeter measures voltage. (a) False (b) True
20. 20.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
21. 21.True or false: voltage is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: energy used each second is measured in watts (W). (a) False (b) True
23. 23.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.📏 How many watts (W) is 1.4 kW?
25. 25.True or false: current is measured in amperes (A). (a) False (b) True
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 0.79 A?
28. 28.True or false: power is measured in amperes (A). (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 1.26 A?
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
32. 32.📏 How many kilowatts (kW) is 1400 W? =
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
35. 35.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
36. 36.📏 How many kilowatts (kW) is 3350 W? =
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.True or false: the voltmeter measures current. (a) False (b) True
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
40. 40.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) current

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