Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 76 · 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: resistance is measured in ohms (Ω). (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
4. 4.📏 How many milliamperes (mA) is 2.66 A?
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
9. 9.📏 How many amperes (A) is 1680 mA? =
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
11. 11.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) energy used each second
12. 12.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
13. 13.True or false: power is measured in ohms (Ω). (a) True (b) False
14. 14.📏 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
15. 15.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
16. 16.📏 How many watts (W) is 2.3 kW?
17. 17.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) voltage (d) the flow of charge
18. 18.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) current
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
21. 21.True or false: the voltmeter measures voltage. (a) False (b) True
22. 22.True or false: power is measured in watts (W). (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 2.8 A?
24. 24.📏 How many watts (W) is 4.4 kW?
25. 25.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
26. 26.📏 How many ohms (Ω) is 7.8 kΩ?
27. 27.📏 How many watts (W) is 5 kW?
28. 28.📏 How many amperes (A) is 2910 mA? =
29. 29.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) current (d) resistance
30. 30.📏 How many ohms (Ω) is 3 kΩ?
31. 31.True or false: how much a part resists is measured in volts (V). (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 3700 W? =
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.📏 How many kilowatts (kW) is 3050 W? =
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
37. 37.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
38. 38.📏 How many amperes (A) is 2870 mA? =
39. 39.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
40. 40.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) resistance (d) power

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