Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 402 · 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.📏 How many amperes (A) is 1730 mA? =
2. 2.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
3. 3.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) current (d) the flow of charge
4. 4.True or false: the flow of charge is measured in volts (V). (a) True (b) False
5. 5.True or false: resistance is measured in ohms (Ω). (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.True or false: the ammeter measures current. (a) False (b) True
8. 8.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
10. 10.True or false: the push of a cell is measured in volts (V). (a) False (b) True
11. 11.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
12. 12.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
13. 13.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) the push of a cell (d) voltage
14. 14.True or false: power is measured in ohms (Ω). (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.True or false: power is measured in watts (W). (a) False (b) True
17. 17.📏 How many amperes (A) is 780 mA? =
18. 18.True or false: current is measured in amperes (A). (a) False (b) True
19. 19.📏 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
20. 20.📏 How many ohms (Ω) is 2.6 kΩ?
21. 21.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
22. 22.📏 How many watts (W) is 2.5 kW?
23. 23.True or false: current is measured in ohms (Ω). (a) True (b) False
24. 24.True or false: the voltmeter measures current. (a) True (b) False
25. 25.True or false: the push of a cell is measured in watts (W). (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 100 Ω? =
27. 27.📏 How many amperes (A) is 410 mA? =
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
29. 29.📏 How many milliamperes (mA) is 2.71 A?
30. 30.True or false: the ammeter is joined in series. (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 2350 W? =
32. 32.📏 How many amperes (A) is 2060 mA? =
33. 33.True or false: the ammeter is joined across a part. (a) True (b) False
34. 34.📏 How many amperes (A) is 1620 mA? =
35. 35.📏 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
36. 36.Which of these is measured in volts (V)? (a) resistance (b) power (c) voltage (d) how much a part resists
37. 37.True or false: the voltmeter is joined across a part. (a) False (b) True
38. 38.📏 How many watts (W) is 3.3 kW?
39. 39.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10

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