Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 800 · 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 current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
5. 5.True or false: the voltmeter measures voltage. (a) False (b) True
6. 6.📏 How many milliamperes (mA) is 1.98 A?
7. 7.📏 How many amperes (A) is 990 mA? =
8. 8.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
9. 9.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
12. 12.📏 How many kilowatts (kW) is 850 W? =
13. 13.True or false: the voltmeter is joined across a part. (a) False (b) True
14. 14.Which of these is measured in volts (V)? (a) voltage (b) power (c) resistance (d) how much a part resists
15. 15.True or false: the voltmeter measures current. (a) False (b) True
16. 16.True or false: the ammeter is joined in series. (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
18. 18.📏 How many kilowatts (kW) is 2550 W? =
19. 19.📏 How many kilowatts (kW) is 4800 W? =
20. 20.Which of these is measured in amperes (A)? (a) current (b) resistance (c) how much a part resists (d) the push of a cell
21. 21.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) the push of a cell (d) the flow of charge
22. 22.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many watts (W) is 0.3 kW?
24. 24.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.True or false: voltage is measured in amperes (A). (a) True (b) False
27. 27.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) the push of a cell (d) energy used each second
28. 28.📏 How many ohms (Ω) is 2.7 kΩ?
29. 29.📏 How many watts (W) is 4.5 kW?
30. 30.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) voltage (d) the push of a cell
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
34. 34.📏 How many watts (W) is 3.6 kW?
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
36. 36.True or false: resistance is measured in watts (W). (a) True (b) False
37. 37.📏 How many watts (W) is 0.8 kW?
38. 38.True or false: the flow of charge is measured in volts (V). (a) True (b) False
39. 39.📏 How many watts (W) is 5 kW?
40. 40.📏 How many milliamperes (mA) is 1.47 A?

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