Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 193 · 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 resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many kilowatts (kW) is 850 W? =
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.True or false: the voltmeter measures current. (a) False (b) True
6. 6.Which of these is measured in amperes (A)? (a) voltage (b) current (c) power (d) how much a part resists
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.📏 How many kilowatts (kW) is 750 W? =
9. 9.True or false: resistance is measured in volts (V). (a) False (b) True
10. 10.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) energy used each second (d) current
11. 11.📏 How many milliamperes (mA) is 2.91 A?
12. 12.True or false: the push of a cell is measured in watts (W). (a) False (b) True
13. 13.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) resistance (d) power
14. 14.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) resistance (d) how much a part resists
15. 15.📏 How many watts (W) is 0.5 kW?
16. 16.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
17. 17.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
18. 18.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) the flow of charge
19. 19.True or false: resistance is measured in watts (W). (a) False (b) True
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
21. 21.True or false: the ammeter is joined in series. (a) True (b) False
22. 22.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
23. 23.📏 How many kilowatts (kW) is 1100 W? =
24. 24.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.True or false: the ammeter measures current. (a) False (b) True
26. 26.True or false: resistance is measured in ohms (Ω). (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
28. 28.📏 How many milliamperes (mA) is 1.76 A?
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 1560 mA? =
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many ohms (Ω) is 7 kΩ?
34. 34.📏 How many kilowatts (kW) is 3100 W? =
35. 35.📏 How many ohms (Ω) is 3.1 kΩ?
36. 36.True or false: the voltmeter is joined across a part. (a) True (b) False
37. 37.True or false: current is measured in watts (W). (a) True (b) False
38. 38.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
39. 39.📏 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
40. 40.📏 How many amperes (A) is 2080 mA? =

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