Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 163 · 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 of these is measured in watts (W)? (a) resistance (b) voltage (c) energy used each second (d) the flow of charge
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
4. 4.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.True or false: resistance is measured in volts (V). (a) False (b) True
7. 7.📏 How many kilowatts (kW) is 4850 W? =
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
9. 9.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
11. 11.📏 How many amperes (A) is 120 mA? =
12. 12.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) resistance (d) energy used each second
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
15. 15.📏 How many watts (W) is 1 kW?
16. 16.📏 How many kilowatts (kW) is 4000 W? =
17. 17.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.True or false: energy used each second is measured in watts (W). (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 0.97 A?
24. 24.📏 How many milliamperes (mA) is 2.32 A?
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
26. 26.📏 How many watts (W) is 3.8 kW?
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.📏 How many ohms (Ω) is 6.7 kΩ?
29. 29.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) how much a part resists (d) the push of a cell
30. 30.True or false: the flow of charge is measured in watts (W). (a) False (b) True
31. 31.Which of these is measured in volts (V)? (a) power (b) voltage (c) how much a part resists (d) current
32. 32.True or false: the ammeter is joined in series. (a) True (b) False
33. 33.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
34. 34.📏 How many watts (W) is 3 kW?
35. 35.📏 How many milliamperes (mA) is 0.15 A?
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 How many ohms (Ω) is 9.5 kΩ?
38. 38.📏 How many amperes (A) is 780 mA? =
39. 39.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
40. 40.📏 How many amperes (A) is 2120 mA? =

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