Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 72 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
2. 2.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
3. 3.True or false: power is measured in volts (V). (a) True (b) False
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
5. 5.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) energy used each second (d) voltage
6. 6.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) power (d) energy used each second
10. 10.True or false: the ammeter measures current. (a) True (b) False
11. 11.📏 How many ohms (Ω) is 0.1 kΩ?
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
15. 15.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) energy used each second (d) power
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
17. 17.📏 How many milliamperes (mA) is 0.68 A?
18. 18.📏 How many kilowatts (kW) is 1750 W? =
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
22. 22.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
24. 24.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
25. 25.📏 How many ohms (Ω) is 3.3 kΩ?
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.True or false: voltage is measured in volts (V). (a) False (b) True
28. 28.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
29. 29.📏 How many kilowatts (kW) is 4850 W? =
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.True or false: power is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: power is measured in watts (W). (a) True (b) False
33. 33.True or false: energy used each second is measured in watts (W). (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 200 W? =
35. 35.📏 How many amperes (A) is 2460 mA? =
36. 36.📏 How many kilowatts (kW) is 1400 W? =
37. 37.📏 How many ohms (Ω) is 3.6 kΩ?
38. 38.📏 How many amperes (A) is 2400 mA? =
39. 39.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
40. 40.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) current

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