Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 446 · 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 2160 mA? =
2. 2.True or false: voltage is measured in watts (W). (a) True (b) False
3. 3.📏 How many milliamperes (mA) is 0.4 A?
4. 4.True or false: voltage is measured in amperes (A). (a) True (b) False
5. 5.📏 How many kilowatts (kW) is 700 W? =
6. 6.📏 How many amperes (A) is 130 mA? =
7. 7.True or false: power is measured in amperes (A). (a) True (b) False
8. 8.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
10. 10.📏 How many watts (W) is 1.4 kW?
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.📏 How many watts (W) is 4.9 kW?
16. 16.📏 How many milliamperes (mA) is 1.05 A?
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.True or false: the ammeter measures current. (a) False (b) True
19. 19.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) the flow of charge (d) voltage
20. 20.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) the flow of charge (d) voltage
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
22. 22.📏 How many watts (W) is 4.3 kW?
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.📏 How many amperes (A) is 2700 mA? =
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
26. 26.📏 How many amperes (A) is 2400 mA? =
27. 27.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
29. 29.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
30. 30.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the flow of charge (d) power
31. 31.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) power (d) current
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.📏 How many amperes (A) is 1530 mA? =
34. 34.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
35. 35.📏 How many ohms (Ω) is 1.9 kΩ?
36. 36.📏 How many milliamperes (mA) is 0.31 A?
37. 37.True or false: the voltmeter measures current. (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 1850 W? =
39. 39.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
40. 40.📏 How many amperes (A) is 2910 mA? =

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