Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 127 · 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.True or false: the voltmeter measures voltage. (a) True (b) False
2. 2.📏 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
3. 3.True or false: voltage is measured in volts (V). (a) False (b) True
4. 4.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
5. 5.📏 How many ohms (Ω) is 4.1 kΩ?
6. 6.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.True or false: the push of a cell is measured in volts (V). (a) True (b) False
9. 9.True or false: voltage is measured in amperes (A). (a) False (b) True
10. 10.True or false: voltage is measured in watts (W). (a) True (b) False
11. 11.True or false: resistance is measured in volts (V). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
13. 13.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) power (d) current
14. 14.True or false: the ammeter measures voltage. (a) False (b) True
15. 15.📏 How many amperes (A) is 2140 mA? =
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) energy used each second (d) how much a part resists
18. 18.📏 How many ohms (Ω) is 9.4 kΩ?
19. 19.True or false: the voltmeter measures current. (a) True (b) False
20. 20.True or false: the ammeter measures current. (a) True (b) False
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
24. 24.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) energy used each second (d) how much a part resists
25. 25.📏 How many watts (W) is 0.5 kW?
26. 26.True or false: power is measured in volts (V). (a) False (b) True
27. 27.True or false: power is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: current is measured in amperes (A). (a) False (b) True
29. 29.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
30. 30.True or false: the ammeter is joined across a part. (a) True (b) False
31. 31.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
32. 32.📏 How many amperes (A) is 500 mA? =
33. 33.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
34. 34.📏 How many milliamperes (mA) is 0.22 A?
35. 35.📏 How many amperes (A) is 660 mA? =
36. 36.True or false: the flow of charge is measured in watts (W). (a) False (b) True
37. 37.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
38. 38.📏 How many kilo-ohms (kΩ) is 600 Ω? =
39. 39.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 3400 Ω? =

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