Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 689 · 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.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.📏 How many amperes (A) is 1230 mA? =
3. 3.📏 How many watts (W) is 0.2 kW?
4. 4.True or false: power is measured in watts (W). (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 1.75 A?
6. 6.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
7. 7.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) how much a part resists (d) power
8. 8.📏 How many amperes (A) is 630 mA? =
9. 9.True or false: energy used each second is measured in watts (W). (a) True (b) False
10. 10.True or false: energy used each second is measured in amperes (A). (a) True (b) False
11. 11.True or false: voltage is measured in amperes (A). (a) False (b) True
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
15. 15.📏 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
16. 16.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) power
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
18. 18.True or false: the ammeter measures voltage. (a) True (b) False
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 How many kilowatts (kW) is 1050 W? =
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) energy used each second (d) how much a part resists
24. 24.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) current
25. 25.📏 How many kilowatts (kW) is 3550 W? =
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
27. 27.📏 How many amperes (A) is 1950 mA? =
28. 28.📏 How many amperes (A) is 2290 mA? =
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
30. 30.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
31. 31.📏 How many kilowatts (kW) is 1900 W? =
32. 32.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) current (d) power
33. 33.📏 How many kilowatts (kW) is 150 W? =
34. 34.📏 How many watts (W) is 2.1 kW?
35. 35.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
36. 36.True or false: the voltmeter measures current. (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 3650 W? =
38. 38.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) how much a part resists (d) power
39. 39.📏 How many milliamperes (mA) is 2.21 A?
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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