Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 810 · 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 2370 mA? =
2. 2.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
4. 4.📏 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
5. 5.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
9. 9.📏 How many kilo-ohms (kΩ) is 700 Ω? =
10. 10.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.True or false: resistance is measured in ohms (Ω). (a) False (b) True
12. 12.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) resistance
13. 13.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) the push of a cell
14. 14.📏 How many kilowatts (kW) is 50 W? =
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.True or false: the voltmeter is joined across a part. (a) False (b) True
18. 18.True or false: current is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
21. 21.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
22. 22.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
23. 23.True or false: voltage is measured in ohms (Ω). (a) False (b) True
24. 24.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
27. 27.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) current (d) power
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
29. 29.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) the flow of charge (d) voltage
30. 30.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) power (d) current
31. 31.📏 How many kilowatts (kW) is 4800 W? =
32. 32.📏 How many amperes (A) is 2680 mA? =
33. 33.True or false: the flow of charge is measured in watts (W). (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 2950 W? =
35. 35.📏 How many ohms (Ω) is 10 kΩ?
36. 36.📏 How many watts (W) is 2.7 kW?
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.True or false: voltage is measured in volts (V). (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
40. 40.📏 How many kilowatts (kW) is 1800 W? =

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