Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 125 · 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 260 mA? =
2. 2.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) resistance (d) the flow of charge
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
4. 4.True or false: power is measured in watts (W). (a) True (b) False
5. 5.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
6. 6.True or false: power is measured in ohms (Ω). (a) True (b) False
7. 7.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
8. 8.True or false: the voltmeter is joined in series. (a) False (b) True
9. 9.📏 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
10. 10.📏 How many amperes (A) is 2250 mA? =
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
13. 13.📏 How many watts (W) is 0.1 kW?
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
15. 15.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
16. 16.True or false: energy used each second is measured in amperes (A). (a) False (b) True
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) power (d) voltage
20. 20.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 0.69 A?
23. 23.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) energy used each second (d) the push of a cell
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.Which of these is measured in watts (W)? (a) current (b) voltage (c) resistance (d) energy used each second
26. 26.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
27. 27.📏 How many amperes (A) is 2270 mA? =
28. 28.📏 How many milliamperes (mA) is 2.55 A?
29. 29.True or false: the push of a cell is measured in volts (V). (a) False (b) True
30. 30.📏 How many amperes (A) is 2230 mA? =
31. 31.📏 How many watts (W) is 2.1 kW?
32. 32.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
34. 34.📏 How many milliamperes (mA) is 2.95 A?
35. 35.📏 How many kilowatts (kW) is 4600 W? =
36. 36.📏 How many milliamperes (mA) is 0.64 A?
37. 37.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
38. 38.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) the push of a cell (d) power
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) power (d) current
40. 40.📏 How many amperes (A) is 2470 mA? =

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