Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 144 · 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: power is measured in ohms (Ω). (a) False (b) True
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.True or false: the push of a cell is measured in watts (W). (a) False (b) True
6. 6.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) voltage (d) the flow of charge
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
9. 9.📏 How many amperes (A) is 1050 mA? =
10. 10.📏 How many amperes (A) is 480 mA? =
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
12. 12.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.📏 How many ohms (Ω) is 2 kΩ?
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.📏 How many milliamperes (mA) is 0.16 A?
17. 17.📏 How many watts (W) is 1.9 kW?
18. 18.📏 How many kilowatts (kW) is 3900 W? =
19. 19.📏 How many ohms (Ω) is 6.6 kΩ?
20. 20.True or false: the push of a cell is measured in volts (V). (a) False (b) True
21. 21.True or false: voltage is measured in ohms (Ω). (a) True (b) False
22. 22.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) power
23. 23.True or false: the ammeter is joined across a part. (a) True (b) False
24. 24.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
25. 25.True or false: power is measured in watts (W). (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) voltage (d) resistance
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
29. 29.True or false: the ammeter is joined in series. (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 1550 W? =
31. 31.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.48 A?
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
35. 35.📏 How many milliamperes (mA) is 1.69 A?
36. 36.True or false: voltage is measured in volts (V). (a) False (b) True
37. 37.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
38. 38.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
39. 39.True or false: energy used each second is measured in watts (W). (a) True (b) False
40. 40.📏 How many kilo-ohms (kΩ) is 2400 Ω? =

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