Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 542 · 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 volts (V)? (a) how much a part resists (b) current (c) voltage (d) the flow of charge
2. 2.True or false: voltage is measured in volts (V). (a) False (b) True
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
5. 5.📏 How many ohms (Ω) is 2.7 kΩ?
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
8. 8.True or false: resistance is measured in ohms (Ω). (a) False (b) True
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) current (d) how much a part resists
11. 11.True or false: power is measured in amperes (A). (a) False (b) True
12. 12.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) the flow of charge (d) power
13. 13.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.📏 How many watts (W) is 4.3 kW?
16. 16.True or false: the voltmeter is joined in series. (a) True (b) False
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
19. 19.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
20. 20.📏 How many milliamperes (mA) is 0.71 A?
21. 21.True or false: the voltmeter measures voltage. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 0.11 A?
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
24. 24.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
25. 25.📏 How many milliamperes (mA) is 1.94 A?
26. 26.True or false: energy used each second is measured in volts (V). (a) True (b) False
27. 27.True or false: the ammeter measures voltage. (a) False (b) True
28. 28.True or false: the ammeter measures current. (a) True (b) False
29. 29.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
30. 30.📏 How many ohms (Ω) is 0.7 kΩ?
31. 31.True or false: voltage is measured in watts (W). (a) False (b) True
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) current (d) the push of a cell
33. 33.📏 How many amperes (A) is 1280 mA? =
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
35. 35.True or false: current is measured in amperes (A). (a) False (b) True
36. 36.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) voltage
37. 37.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
38. 38.True or false: power is measured in watts (W). (a) False (b) True
39. 39.📏 How many milliamperes (mA) is 0.92 A?
40. 40.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)

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