Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 237 · 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 energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.True or false: the push of a cell is measured in volts (V). (a) True (b) False
3. 3.True or false: the ammeter measures current. (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 How many ohms (Ω) is 0.3 kΩ?
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) the push of a cell (d) power
8. 8.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
9. 9.📏 How many milliamperes (mA) is 0.29 A?
10. 10.True or false: the push of a cell is measured in watts (W). (a) True (b) False
11. 11.True or false: current is measured in amperes (A). (a) False (b) True
12. 12.True or false: the voltmeter is joined in series. (a) True (b) False
13. 13.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
14. 14.True or false: energy used each second is measured in volts (V). (a) True (b) False
15. 15.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.True or false: current is measured in volts (V). (a) True (b) False
18. 18.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) current (d) power
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.📏 How many ohms (Ω) is 7.3 kΩ?
21. 21.📏 How many ohms (Ω) is 0.5 kΩ?
22. 22.True or false: the voltmeter measures current. (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
24. 24.📏 How many ohms (Ω) is 7.2 kΩ?
25. 25.True or false: the ammeter measures voltage. (a) True (b) False
26. 26.📏 How many amperes (A) is 110 mA? =
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
28. 28.True or false: voltage is measured in watts (W). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
30. 30.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
31. 31.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
32. 32.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
33. 33.📏 How many amperes (A) is 2220 mA? =
34. 34.📏 How many kilowatts (kW) is 2100 W? =
35. 35.📏 How many kilowatts (kW) is 1750 W? =
36. 36.True or false: resistance is measured in volts (V). (a) False (b) True
37. 37.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
39. 39.📏 How many amperes (A) is 790 mA? =
40. 40.📏 How many amperes (A) is 140 mA? =

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