Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 573 · 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.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.True or false: current is measured in volts (V). (a) True (b) False
4. 4.True or false: voltage is measured in amperes (A). (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 0.78 A?
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
8. 8.Which of these is measured in volts (V)? (a) resistance (b) power (c) the flow of charge (d) voltage
9. 9.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.Which of these is measured in watts (W)? (a) power (b) voltage (c) how much a part resists (d) the flow of charge
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.📏 How many kilowatts (kW) is 3850 W? =
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 How many ohms (Ω) is 6.5 kΩ?
16. 16.True or false: power is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many amperes (A) is 470 mA? =
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
19. 19.📏 How many milliamperes (mA) is 0.51 A?
20. 20.📏 How many amperes (A) is 150 mA? =
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
22. 22.📏 How many amperes (A) is 2580 mA? =
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
24. 24.True or false: power is measured in amperes (A). (a) False (b) True
25. 25.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
26. 26.True or false: resistance is measured in amperes (A). (a) False (b) True
27. 27.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.True or false: the voltmeter is joined across a part. (a) False (b) True
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.True or false: the flow of charge is measured in watts (W). (a) True (b) False
32. 32.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.True or false: energy used each second is measured in volts (V). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.22 A?
37. 37.True or false: energy used each second is measured in watts (W). (a) False (b) True
38. 38.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many ohms (Ω) is 1 kΩ?
40. 40.📏 How many milliamperes (mA) is 2.14 A?

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