Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 837 · 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 how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
3. 3.True or false: the ammeter is joined in series. (a) False (b) True
4. 4.📏 How many ohms (Ω) is 9.9 kΩ?
5. 5.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) how much a part resists (d) energy used each second
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
8. 8.Which of these is measured in amperes (A)? (a) current (b) power (c) voltage (d) how much a part resists
9. 9.📏 How many amperes (A) is 630 mA? =
10. 10.📏 How many amperes (A) is 1650 mA? =
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
12. 12.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.True or false: the push of a cell is measured in volts (V). (a) True (b) False
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
15. 15.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
17. 17.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) voltage (d) power
18. 18.📏 How many milliamperes (mA) is 2.95 A?
19. 19.📏 How many amperes (A) is 220 mA? =
20. 20.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
22. 22.📏 How many ohms (Ω) is 8.3 kΩ?
23. 23.True or false: power is measured in watts (W). (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.True or false: energy used each second is measured in watts (W). (a) True (b) False
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
27. 27.📏 How many kilowatts (kW) is 750 W? =
28. 28.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 2.38 A?
32. 32.📏 How many milliamperes (mA) is 2.05 A?
33. 33.True or false: voltage is measured in volts (V). (a) False (b) True
34. 34.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
35. 35.True or false: how much a part resists is measured in volts (V). (a) True (b) False
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 3000 W? =
38. 38.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
39. 39.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
40. 40.📏 How many kilowatts (kW) is 4350 W? =

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