Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 344 · 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) voltage (b) how much a part resists (c) energy used each second (d) the push of a cell
2. 2.True or false: power is measured in amperes (A). (a) True (b) False
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
8. 8.📏 How many amperes (A) is 1220 mA? =
9. 9.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) how much a part resists (d) resistance
10. 10.📏 How many milliamperes (mA) is 1.03 A?
11. 11.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
12. 12.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) how much a part resists (d) power
13. 13.📏 How many watts (W) is 1.7 kW?
14. 14.Which of these is measured in amperes (A)? (a) resistance (b) current (c) energy used each second (d) power
15. 15.True or false: the ammeter is joined in series. (a) False (b) True
16. 16.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
17. 17.📏 How many watts (W) is 5 kW?
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
19. 19.True or false: power is measured in ohms (Ω). (a) False (b) True
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
22. 22.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) power (d) the flow of charge
23. 23.📏 How many milliamperes (mA) is 0.35 A?
24. 24.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
25. 25.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.📏 How many amperes (A) is 990 mA? =
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
29. 29.📏 How many milliamperes (mA) is 1.43 A?
30. 30.📏 How many watts (W) is 4.2 kW?
31. 31.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) resistance
32. 32.📏 How many ohms (Ω) is 9.3 kΩ?
33. 33.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
35. 35.True or false: voltage is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many ohms (Ω) is 0.6 kΩ?
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
39. 39.📏 How many ohms (Ω) is 1.1 kΩ?
40. 40.📏 How many amperes (A) is 1400 mA? =

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