Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 368 · 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 pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
6. 6.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
7. 7.📏 How many kilowatts (kW) is 2350 W? =
8. 8.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
9. 9.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
10. 10.True or false: resistance is measured in amperes (A). (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 1.88 A?
12. 12.True or false: the voltmeter is joined in series. (a) True (b) False
13. 13.📏 How many watts (W) is 4.5 kW?
14. 14.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
15. 15.📏 How many kilowatts (kW) is 4200 W? =
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
18. 18.True or false: the ammeter measures current. (a) True (b) False
19. 19.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) the flow of charge
20. 20.Which of these is measured in amperes (A)? (a) power (b) resistance (c) current (d) voltage
21. 21.📏 How many ohms (Ω) is 0.9 kΩ?
22. 22.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
24. 24.True or false: the ammeter measures voltage. (a) True (b) False
25. 25.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
26. 26.📏 How many watts (W) is 1.1 kW?
27. 27.📏 How many amperes (A) is 270 mA? =
28. 28.📏 How many milliamperes (mA) is 2.41 A?
29. 29.True or false: power is measured in amperes (A). (a) False (b) True
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
31. 31.📏 How many ohms (Ω) is 1.6 kΩ?
32. 32.True or false: voltage is measured in amperes (A). (a) False (b) True
33. 33.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: the voltmeter measures voltage. (a) True (b) False
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
37. 37.📏 How many kilowatts (kW) is 2200 W? =
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
39. 39.📏 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
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000

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