Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 708 · 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: the voltmeter measures current. (a) True (b) False
2. 2.📏 How many amperes (A) is 1140 mA? =
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
4. 4.True or false: energy used each second is measured in amperes (A). (a) True (b) False
5. 5.📏 How many milliamperes (mA) is 0.14 A?
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) the flow of charge (d) how much a part resists
7. 7.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
8. 8.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) current (d) voltage
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
13. 13.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
14. 14.True or false: the ammeter measures voltage. (a) False (b) True
15. 15.📏 How many amperes (A) is 1480 mA? =
16. 16.True or false: the voltmeter is joined across a part. (a) True (b) False
17. 17.📏 How many watts (W) is 1.6 kW?
18. 18.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.📏 How many watts (W) is 2.1 kW?
22. 22.📏 How many kilowatts (kW) is 4900 W? =
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.📏 How many ohms (Ω) is 2.5 kΩ?
25. 25.True or false: voltage is measured in watts (W). (a) True (b) False
26. 26.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
28. 28.True or false: current is measured in amperes (A). (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
30. 30.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
31. 31.True or false: resistance is measured in volts (V). (a) False (b) True
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) the flow of charge (d) the push of a cell
34. 34.📏 How many kilowatts (kW) is 3450 W? =
35. 35.📏 How many amperes (A) is 2490 mA? =
36. 36.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
37. 37.📏 How many watts (W) is 0.8 kW?
38. 38.True or false: the push of a cell is measured in volts (V). (a) True (b) False
39. 39.📏 How many ohms (Ω) is 9.5 kΩ?
40. 40.True or false: the flow of charge is measured in volts (V). (a) False (b) True

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