Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 529 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
2. 2.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) current (d) the flow of charge
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) voltage
5. 5.True or false: voltage is measured in volts (V). (a) False (b) True
6. 6.📏 How many amperes (A) is 2910 mA? =
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
9. 9.📏 How many kilowatts (kW) is 1000 W? =
10. 10.📏 How many amperes (A) is 800 mA? =
11. 11.📏 How many amperes (A) is 2880 mA? =
12. 12.📏 How many watts (W) is 0.5 kW?
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
14. 14.True or false: how much a part resists is measured in volts (V). (a) True (b) False
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) power (d) the push of a cell
17. 17.True or false: the voltmeter measures current. (a) True (b) False
18. 18.True or false: power is measured in amperes (A). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 How many ohms (Ω) is 2.4 kΩ?
21. 21.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
22. 22.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
23. 23.📏 How many kilowatts (kW) is 4450 W? =
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
25. 25.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
26. 26.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
27. 27.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) resistance (d) voltage
28. 28.True or false: power is measured in watts (W). (a) True (b) False
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
30. 30.True or false: resistance is measured in volts (V). (a) False (b) True
31. 31.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
32. 32.True or false: the push of a cell is measured in volts (V). (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 0.44 A?
34. 34.True or false: the voltmeter measures voltage. (a) False (b) True
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.True or false: the ammeter is joined in series. (a) False (b) True
37. 37.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) voltage
38. 38.📏 How many amperes (A) is 350 mA? =
39. 39.Which of these is measured in amperes (A)? (a) power (b) current (c) the push of a cell (d) energy used each second
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter

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