Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 41 · 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) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
2. 2.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
3. 3.📏 How many amperes (A) is 2050 mA? =
4. 4.📏 How many watts (W) is 3.1 kW?
5. 5.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) resistance (d) energy used each second
6. 6.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 How many kilowatts (kW) is 1750 W? =
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
11. 11.True or false: current is measured in amperes (A). (a) False (b) True
12. 12.True or false: the ammeter measures voltage. (a) False (b) True
13. 13.📏 How many amperes (A) is 1000 mA? =
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) power (d) current
16. 16.Which of these is measured in watts (W)? (a) resistance (b) power (c) voltage (d) how much a part resists
17. 17.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) resistance
18. 18.True or false: power is measured in volts (V). (a) True (b) False
19. 19.True or false: resistance is measured in amperes (A). (a) True (b) False
20. 20.📏 How many watts (W) is 2.2 kW?
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
22. 22.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
23. 23.📏 How many amperes (A) is 80 mA? =
24. 24.📏 How many milliamperes (mA) is 0.83 A?
25. 25.📏 How many amperes (A) is 1580 mA? =
26. 26.True or false: current is measured in watts (W). (a) False (b) True
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) voltage (d) resistance
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
31. 31.True or false: the voltmeter is joined in series. (a) True (b) False
32. 32.📏 How many watts (W) is 2.8 kW?
33. 33.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
34. 34.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
35. 35.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) how much a part resists
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 1.13 A?
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
39. 39.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
40. 40.📏 How many milliamperes (mA) is 0.56 A?

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