Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 477 · 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 of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) resistance (d) voltage
2. 2.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
3. 3.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.📏 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
6. 6.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
7. 7.True or false: power is measured in watts (W). (a) True (b) False
8. 8.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) how much a part resists (d) current
9. 9.📏 How many watts (W) is 1.3 kW?
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
11. 11.📏 How many milliamperes (mA) is 1.68 A?
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.True or false: voltage is measured in amperes (A). (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
16. 16.📏 How many ohms (Ω) is 3.8 kΩ?
17. 17.True or false: the ammeter measures current. (a) False (b) True
18. 18.📏 How many amperes (A) is 750 mA? =
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
20. 20.True or false: current is measured in amperes (A). (a) True (b) False
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
23. 23.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
24. 24.True or false: energy used each second is measured in watts (W). (a) False (b) True
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) the push of a cell
27. 27.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
29. 29.True or false: the voltmeter is joined in series. (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
31. 31.📏 How many amperes (A) is 140 mA? =
32. 32.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
34. 34.True or false: the ammeter is joined in series. (a) True (b) False
35. 35.True or false: how much a part resists is measured in watts (W). (a) False (b) True
36. 36.True or false: power is measured in volts (V). (a) False (b) True
37. 37.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) power
38. 38.True or false: power is measured in ohms (Ω). (a) True (b) False
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
40. 40.📏 How many watts (W) is 2.3 kW?

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