Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 712 · 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 resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 How many amperes (A) is 1830 mA? =
3. 3.True or false: resistance is measured in volts (V). (a) False (b) True
4. 4.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
6. 6.📏 How many watts (W) is 0.3 kW?
7. 7.📏 How many amperes (A) is 2040 mA? =
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.True or false: current is measured in volts (V). (a) True (b) False
11. 11.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
12. 12.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 How many milliamperes (mA) is 1.87 A?
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 How many kilowatts (kW) is 1000 W? =
18. 18.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
19. 19.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) the flow of charge (d) current
20. 20.True or false: voltage is measured in volts (V). (a) False (b) True
21. 21.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
22. 22.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) resistance (d) energy used each second
23. 23.True or false: energy used each second is measured in amperes (A). (a) True (b) False
24. 24.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
25. 25.📏 How many amperes (A) is 150 mA? =
26. 26.True or false: the ammeter is joined across a part. (a) False (b) True
27. 27.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) current (d) the push of a cell
28. 28.📏 How many milliamperes (mA) is 2.62 A?
29. 29.True or false: resistance is measured in amperes (A). (a) True (b) False
30. 30.True or false: the ammeter is joined in series. (a) False (b) True
31. 31.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) voltage (d) the flow of charge
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
33. 33.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) resistance (d) current
34. 34.True or false: how much a part resists is measured in volts (V). (a) True (b) False
35. 35.True or false: power is measured in amperes (A). (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
37. 37.📏 How many amperes (A) is 2940 mA? =
38. 38.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
39. 39.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
40. 40.True or false: the flow of charge is measured in watts (W). (a) False (b) True

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