Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 675 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
4. 4.📏 How many milliamperes (mA) is 0.35 A?
5. 5.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) the flow of charge (d) energy used each second
6. 6.True or false: energy used each second is measured in amperes (A). (a) True (b) False
7. 7.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
8. 8.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) resistance (d) energy used each second
9. 9.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
10. 10.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
13. 13.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
15. 15.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
18. 18.True or false: current is measured in watts (W). (a) True (b) False
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
20. 20.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.📏 How many watts (W) is 2.5 kW?
23. 23.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) resistance (d) voltage
24. 24.True or false: resistance is measured in ohms (Ω). (a) True (b) False
25. 25.Which of these is measured in volts (V)? (a) resistance (b) power (c) current (d) voltage
26. 26.True or false: the ammeter is joined across a part. (a) False (b) True
27. 27.True or false: the ammeter is joined in series. (a) True (b) False
28. 28.📏 How many ohms (Ω) is 0.1 kΩ?
29. 29.True or false: how much a part resists is measured in watts (W). (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 1580 mA? =
32. 32.📏 How many kilowatts (kW) is 2600 W? =
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
34. 34.📏 How many amperes (A) is 440 mA? =
35. 35.📏 How many amperes (A) is 2890 mA? =
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 How many watts (W) is 0.6 kW?
38. 38.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 3.2 kΩ?

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