Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 868 · 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 the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
2. 2.Which of these is measured in volts (V)? (a) current (b) power (c) the push of a cell (d) energy used each second
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
7. 7.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
8. 8.📏 How many milliamperes (mA) is 0.79 A?
9. 9.True or false: voltage is measured in ohms (Ω). (a) False (b) True
10. 10.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.True or false: resistance is measured in volts (V). (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.True or false: resistance is measured in amperes (A). (a) True (b) False
14. 14.True or false: current is measured in amperes (A). (a) True (b) False
15. 15.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) power (d) current
16. 16.📏 How many watts (W) is 1.4 kW?
17. 17.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in watts (W)? (a) power (b) current (c) voltage (d) the flow of charge
19. 19.True or false: resistance is measured in ohms (Ω). (a) True (b) False
20. 20.📏 How many amperes (A) is 2510 mA? =
21. 21.📏 How many milliamperes (mA) is 0.13 A?
22. 22.📏 How many ohms (Ω) is 2.3 kΩ?
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
25. 25.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 How many amperes (A) is 260 mA? =
29. 29.📏 How many milliamperes (mA) is 0.66 A?
30. 30.📏 How many amperes (A) is 2770 mA? =
31. 31.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) voltage (d) resistance
32. 32.📏 How many amperes (A) is 220 mA? =
33. 33.📏 How many ohms (Ω) is 0.6 kΩ?
34. 34.📏 How many milliamperes (mA) is 2.29 A?
35. 35.True or false: the ammeter is joined across a part. (a) True (b) False
36. 36.📏 How many amperes (A) is 50 mA? =
37. 37.📏 How many watts (W) is 2.4 kW?
38. 38.True or false: the push of a cell is measured in volts (V). (a) False (b) True
39. 39.📏 How many watts (W) is 4.7 kW?
40. 40.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)

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