Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 728 · 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: resistance is measured in ohms (Ω). (a) False (b) True
2. 2.📏 How many milliamperes (mA) is 1.43 A?
3. 3.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.True or false: how much a part resists is measured in volts (V). (a) True (b) False
6. 6.📏 How many kilowatts (kW) is 2000 W? =
7. 7.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.📏 How many ohms (Ω) is 2.4 kΩ?
10. 10.📏 How many milliamperes (mA) is 2.45 A?
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
12. 12.True or false: the push of a cell is measured in watts (W). (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
14. 14.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
15. 15.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
16. 16.True or false: voltage is measured in watts (W). (a) True (b) False
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
18. 18.📏 How many ohms (Ω) is 6.8 kΩ?
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) the push of a cell (d) power
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
23. 23.True or false: current is measured in amperes (A). (a) True (b) False
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) energy used each second (d) the push of a cell
26. 26.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.True or false: the voltmeter is joined across a part. (a) True (b) False
30. 30.📏 How many watts (W) is 2.9 kW?
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.True or false: resistance is measured in volts (V). (a) False (b) True
33. 33.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many amperes (A) is 1770 mA? =
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many kilowatts (kW) is 3700 W? =
39. 39.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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