Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 732 · 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 kilowatts (kW) is 2550 W? =
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
5. 5.True or false: the ammeter is joined across a part. (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 2.07 A?
7. 7.📏 How many kilowatts (kW) is 50 W? =
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
13. 13.📏 How many kilowatts (kW) is 2750 W? =
14. 14.True or false: voltage is measured in amperes (A). (a) True (b) False
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) current (d) how much a part resists
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
18. 18.True or false: power is measured in amperes (A). (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) the flow of charge
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
21. 21.📏 How many ohms (Ω) is 9 kΩ?
22. 22.📏 How many milliamperes (mA) is 0.75 A?
23. 23.📏 How many milliamperes (mA) is 2.89 A?
24. 24.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) current (d) power
25. 25.📏 How many milliamperes (mA) is 0.53 A?
26. 26.📏 How many watts (W) is 1.9 kW?
27. 27.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) voltage (d) current
28. 28.📏 How many amperes (A) is 930 mA? =
29. 29.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
30. 30.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) resistance
31. 31.📏 How many amperes (A) is 2890 mA? =
32. 32.True or false: the voltmeter measures current. (a) True (b) False
33. 33.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
34. 34.📏 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
35. 35.📏 How many ohms (Ω) is 7.7 kΩ?
36. 36.True or false: the flow of charge is measured in watts (W). (a) False (b) True
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 0.66 A?
39. 39.📏 How many kilowatts (kW) is 1100 W? =
40. 40.📏 How many amperes (A) is 1930 mA? =

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