Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 328 · 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: the flow of charge is measured in ohms (Ω). (a) False (b) True
2. 2.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
3. 3.True or false: power is measured in ohms (Ω). (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
5. 5.📏 How many watts (W) is 5 kW?
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
7. 7.📏 How many ohms (Ω) is 0.3 kΩ?
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
9. 9.📏 How many amperes (A) is 530 mA? =
10. 10.True or false: the push of a cell is measured in volts (V). (a) True (b) False
11. 11.📏 How many milliamperes (mA) is 1.66 A?
12. 12.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) the push of a cell (d) power
13. 13.📏 How many watts (W) is 2.2 kW?
14. 14.Which of these is measured in volts (V)? (a) power (b) voltage (c) the flow of charge (d) resistance
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.True or false: the flow of charge is measured in watts (W). (a) False (b) True
17. 17.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
18. 18.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
20. 20.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
21. 21.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) resistance (d) voltage
24. 24.📏 How many milliamperes (mA) is 0.53 A?
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
26. 26.True or false: the ammeter measures current. (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.📏 How many amperes (A) is 2480 mA? =
29. 29.📏 How many kilowatts (kW) is 1400 W? =
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: voltage is measured in volts (V). (a) True (b) False
32. 32.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
33. 33.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
34. 34.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
35. 35.📏 How many milliamperes (mA) is 1.32 A?
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
38. 38.True or false: energy used each second is measured in volts (V). (a) True (b) False
39. 39.True or false: current is measured in volts (V). (a) True (b) False
40. 40.True or false: the voltmeter measures current. (a) False (b) True

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