Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 421 · 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 voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 How many watts (W) is 4.8 kW?
3. 3.True or false: the voltmeter measures current. (a) True (b) False
4. 4.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
5. 5.📏 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
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
7. 7.📏 How many amperes (A) is 2060 mA? =
8. 8.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.True or false: resistance is measured in volts (V). (a) False (b) True
11. 11.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) resistance (d) the push of a cell
12. 12.True or false: the flow of charge is measured in volts (V). (a) False (b) True
13. 13.📏 How many amperes (A) is 2490 mA? =
14. 14.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
15. 15.True or false: resistance is measured in watts (W). (a) False (b) True
16. 16.📏 How many milliamperes (mA) is 0.79 A?
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
18. 18.📏 How many ohms (Ω) is 2 kΩ?
19. 19.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) voltage (d) how much a part resists
21. 21.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) voltage (d) current
22. 22.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.📏 How many kilowatts (kW) is 300 W? =
24. 24.📏 How many milliamperes (mA) is 1.9 A?
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.📏 How many ohms (Ω) is 2.8 kΩ?
28. 28.True or false: the ammeter measures voltage. (a) False (b) True
29. 29.📏 How many amperes (A) is 1950 mA? =
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.Which of these is measured in ohms (Ω)? (a) current (b) power (c) energy used each second (d) how much a part resists
35. 35.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
36. 36.📏 How many milliamperes (mA) is 0.55 A?
37. 37.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
38. 38.True or false: voltage is measured in amperes (A). (a) False (b) True
39. 39.📏 How many ohms (Ω) is 1 kΩ?
40. 40.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) current (d) resistance

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