Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 563 · 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.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) resistance (d) how much a part resists
2. 2.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 How many milliamperes (mA) is 0.8 A?
4. 4.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) voltage (d) energy used each second
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.True or false: the voltmeter is joined across a part. (a) False (b) True
8. 8.📏 How many kilowatts (kW) is 3800 W? =
9. 9.📏 How many kilowatts (kW) is 3500 W? =
10. 10.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
11. 11.📏 How many milliamperes (mA) is 1.8 A?
12. 12.True or false: the voltmeter is joined in series. (a) False (b) True
13. 13.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) current (d) how much a part resists
14. 14.📏 How many ohms (Ω) is 7.8 kΩ?
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.True or false: current is measured in amperes (A). (a) True (b) False
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
18. 18.📏 How many kilowatts (kW) is 1550 W? =
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
21. 21.True or false: energy used each second is measured in watts (W). (a) True (b) False
22. 22.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) the flow of charge (d) how much a part resists
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
24. 24.📏 How many milliamperes (mA) is 2.62 A?
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.📏 How many kilowatts (kW) is 1950 W? =
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
30. 30.📏 How many amperes (A) is 1360 mA? =
31. 31.📏 How many kilowatts (kW) is 1050 W? =
32. 32.📏 How many watts (W) is 4.2 kW?
33. 33.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.True or false: the voltmeter measures voltage. (a) False (b) True
37. 37.📏 How many ohms (Ω) is 4.4 kΩ?
38. 38.📏 How many milliamperes (mA) is 2.34 A?
39. 39.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
40. 40.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) energy used each second (d) the flow of charge

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