Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 363 · 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 unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
2. 2.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
3. 3.📏 How many watts (W) is 4 kW?
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) energy used each second (d) voltage
5. 5.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) energy used each second (d) the flow of charge
6. 6.True or false: the voltmeter is joined across a part. (a) True (b) False
7. 7.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
8. 8.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
9. 9.True or false: current is measured in volts (V). (a) True (b) False
10. 10.📏 How many milliamperes (mA) is 1.18 A?
11. 11.True or false: the ammeter is joined in series. (a) True (b) False
12. 12.True or false: the ammeter measures current. (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
14. 14.📏 How many milliamperes (mA) is 1.45 A?
15. 15.True or false: current is measured in watts (W). (a) False (b) True
16. 16.📏 How many kilowatts (kW) is 4300 W? =
17. 17.📏 How many ohms (Ω) is 3.7 kΩ?
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.📏 How many watts (W) is 1.5 kW?
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.True or false: resistance is measured in volts (V). (a) True (b) False
22. 22.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
23. 23.True or false: power is measured in watts (W). (a) True (b) False
24. 24.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
25. 25.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) resistance (d) the push of a cell
26. 26.True or false: the push of a cell is measured in volts (V). (a) False (b) True
27. 27.True or false: voltage is measured in ohms (Ω). (a) False (b) True
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
29. 29.📏 How many amperes (A) is 640 mA? =
30. 30.📏 How many milliamperes (mA) is 0.23 A?
31. 31.True or false: the ammeter is joined across a part. (a) False (b) True
32. 32.📏 How many watts (W) is 1.2 kW?
33. 33.📏 How many milliamperes (mA) is 0.16 A?
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
36. 36.📏 How many ohms (Ω) is 5.3 kΩ?
37. 37.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
38. 38.True or false: energy used each second is measured in watts (W). (a) False (b) True
39. 39.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) voltage (d) how much a part resists
40. 40.📏 How many milliamperes (mA) is 1.83 A?

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