Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 206 · 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) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 How many milliamperes (mA) is 2.43 A?
7. 7.📏 How many amperes (A) is 1250 mA? =
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 How many milliamperes (mA) is 2.02 A?
11. 11.📏 How many amperes (A) is 850 mA? =
12. 12.Which of these is measured in amperes (A)? (a) power (b) current (c) resistance (d) the push of a cell
13. 13.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
14. 14.📏 How many milliamperes (mA) is 0.89 A?
15. 15.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
16. 16.True or false: energy used each second is measured in amperes (A). (a) False (b) True
17. 17.True or false: the ammeter is joined across a part. (a) False (b) True
18. 18.📏 How many amperes (A) is 1870 mA? =
19. 19.True or false: power is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the flow of charge (d) voltage
21. 21.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) how much a part resists (d) the push of a cell
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
25. 25.📏 How many milliamperes (mA) is 2.58 A?
26. 26.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
27. 27.True or false: resistance is measured in ohms (Ω). (a) False (b) True
28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
30. 30.📏 How many watts (W) is 0.3 kW?
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
33. 33.📏 How many kilowatts (kW) is 1350 W? =
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
35. 35.📏 How many milliamperes (mA) is 2.08 A?
36. 36.📏 How many milliamperes (mA) is 0.41 A?
37. 37.True or false: the ammeter measures voltage. (a) False (b) True
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
39. 39.📏 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
40. 40.📏 How many ohms (Ω) is 7.1 kΩ?

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