Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 381 · 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 2370 mA? =
2. 2.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
3. 3.📏 How many watts (W) is 1.8 kW?
4. 4.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) voltage (d) how much a part resists
5. 5.Which of these is measured in amperes (A)? (a) current (b) resistance (c) voltage (d) how much a part resists
6. 6.📏 How many watts (W) is 2.8 kW?
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
8. 8.True or false: the flow of charge is measured in watts (W). (a) False (b) True
9. 9.True or false: current is measured in ohms (Ω). (a) False (b) True
10. 10.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) power
11. 11.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) resistance (d) power
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 How many watts (W) is 0.9 kW?
14. 14.True or false: the voltmeter is joined across a part. (a) False (b) True
15. 15.📏 How many amperes (A) is 100 mA? =
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
17. 17.📏 How many ohms (Ω) is 7.4 kΩ?
18. 18.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
22. 22.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.True or false: the voltmeter is joined in series. (a) True (b) False
25. 25.📏 How many kilowatts (kW) is 2600 W? =
26. 26.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) the push of a cell (d) resistance
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 How many watts (W) is 4 kW?
29. 29.📏 How many amperes (A) is 2540 mA? =
30. 30.📏 How many kilowatts (kW) is 1000 W? =
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
32. 32.📏 How many milliamperes (mA) is 2.37 A?
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) voltage (d) energy used each second
35. 35.📏 How many amperes (A) is 2320 mA? =
36. 36.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.True or false: energy used each second is measured in volts (V). (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 150 W? =
40. 40.📏 How many amperes (A) is 1320 mA? =

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