Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 311 · 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.True or false: energy used each second is measured in volts (V). (a) False (b) True
2. 2.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
3. 3.True or false: the voltmeter measures voltage. (a) True (b) False
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
5. 5.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
6. 6.📏 How many milliamperes (mA) is 0.37 A?
7. 7.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
8. 8.True or false: the voltmeter is joined across a part. (a) True (b) False
9. 9.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
10. 10.📏 How many amperes (A) is 1840 mA? =
11. 11.True or false: current is measured in amperes (A). (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 400 W? =
13. 13.📏 How many watts (W) is 0.4 kW?
14. 14.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) resistance
17. 17.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell
18. 18.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.True or false: the voltmeter is joined in series. (a) False (b) True
20. 20.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) power (d) the push of a cell
21. 21.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) energy used each second
22. 22.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
23. 23.True or false: the voltmeter measures current. (a) False (b) True
24. 24.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
26. 26.📏 How many kilowatts (kW) is 350 W? =
27. 27.True or false: resistance is measured in watts (W). (a) False (b) True
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
30. 30.True or false: resistance is measured in amperes (A). (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
32. 32.📏 How many amperes (A) is 2050 mA? =
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
35. 35.📏 How many kilowatts (kW) is 1850 W? =
36. 36.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 1650 W? =
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
40. 40.📏 How many kilowatts (kW) is 2100 W? =

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