Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 955 · 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 watts (W) is 2.4 kW?
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.True or false: current is measured in amperes (A). (a) False (b) True
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.📏 How many milliamperes (mA) is 1.38 A?
6. 6.📏 How many amperes (A) is 2410 mA? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 How many watts (W) is 1.5 kW?
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
11. 11.📏 How many ohms (Ω) is 7 kΩ?
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
13. 13.True or false: the ammeter is joined in series. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.📏 How many amperes (A) is 980 mA? =
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
17. 17.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) the push of a cell
18. 18.True or false: current is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
20. 20.True or false: energy used each second is measured in watts (W). (a) False (b) True
21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
23. 23.📏 How many amperes (A) is 1830 mA? =
24. 24.📏 How many kilowatts (kW) is 3950 W? =
25. 25.📏 How many milliamperes (mA) is 0.57 A?
26. 26.📏 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
27. 27.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) current (d) voltage
28. 28.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
29. 29.True or false: the ammeter measures current. (a) False (b) True
30. 30.📏 How many kilowatts (kW) is 3600 W? =
31. 31.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
32. 32.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) how much a part resists (d) current
33. 33.True or false: power is measured in watts (W). (a) True (b) False
34. 34.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
35. 35.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
36. 36.Which of these is measured in watts (W)? (a) power (b) current (c) resistance (d) how much a part resists
37. 37.True or false: resistance is measured in amperes (A). (a) False (b) True
38. 38.True or false: the voltmeter measures current. (a) True (b) False
39. 39.📏 How many watts (W) is 1 kW?
40. 40.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) the push of a cell (d) voltage

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