Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 351 · 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 power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) the push of a cell (d) current
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
6. 6.True or false: power is measured in volts (V). (a) False (b) True
7. 7.📏 How many milliamperes (mA) is 0.35 A?
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
9. 9.📏 How many milliamperes (mA) is 1.87 A?
10. 10.True or false: the voltmeter measures current. (a) False (b) True
11. 11.True or false: the ammeter is joined across a part. (a) False (b) True
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) the flow of charge
14. 14.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) the flow of charge (d) power
15. 15.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
16. 16.True or false: resistance is measured in watts (W). (a) False (b) True
17. 17.📏 How many kilowatts (kW) is 750 W? =
18. 18.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
19. 19.True or false: the push of a cell is measured in watts (W). (a) False (b) True
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
21. 21.True or false: resistance is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: the push of a cell is measured in volts (V). (a) True (b) False
23. 23.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) current (d) power
24. 24.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
25. 25.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
26. 26.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) energy used each second (d) the flow of charge
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
28. 28.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) power
29. 29.True or false: resistance is measured in volts (V). (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
31. 31.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
32. 32.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
34. 34.📏 How many ohms (Ω) is 6 kΩ?
35. 35.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.7 A?
37. 37.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
38. 38.📏 How many amperes (A) is 780 mA? =
39. 39.True or false: the voltmeter is joined across a part. (a) True (b) False
40. 40.True or false: energy used each second is measured in watts (W). (a) True (b) False

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