Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 317 · 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 amperes (A) is 500 mA? =
2. 2.📏 How many kilowatts (kW) is 4750 W? =
3. 3.True or false: power is measured in ohms (Ω). (a) False (b) True
4. 4.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) power (d) current
6. 6.True or false: the voltmeter measures voltage. (a) False (b) True
7. 7.True or false: the ammeter is joined in series. (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) voltage
10. 10.📏 How many amperes (A) is 1430 mA? =
11. 11.📏 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
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.📏 How many watts (W) is 0.2 kW?
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.True or false: voltage is measured in watts (W). (a) False (b) True
16. 16.True or false: resistance is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: power is measured in watts (W). (a) True (b) False
18. 18.True or false: current is measured in amperes (A). (a) True (b) False
19. 19.📏 How many kilowatts (kW) is 4450 W? =
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
21. 21.📏 How many milliamperes (mA) is 1.37 A?
22. 22.True or false: the ammeter measures voltage. (a) True (b) False
23. 23.True or false: the push of a cell is measured in watts (W). (a) False (b) True
24. 24.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) resistance (d) energy used each second
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
26. 26.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many kilowatts (kW) is 2200 W? =
28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
29. 29.True or false: current is measured in ohms (Ω). (a) False (b) True
30. 30.True or false: power is measured in volts (V). (a) True (b) False
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) the flow of charge
32. 32.📏 How many amperes (A) is 880 mA? =
33. 33.True or false: the ammeter is joined across a part. (a) True (b) False
34. 34.📏 How many ohms (Ω) is 7.5 kΩ?
35. 35.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
36. 36.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
37. 37.Which of these is measured in watts (W)? (a) current (b) resistance (c) power (d) the push of a cell
38. 38.📏 How many amperes (A) is 810 mA? =
39. 39.📏 How many watts (W) is 4 kW?
40. 40.📏 How many amperes (A) is 2750 mA? =

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