Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 104 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
2. 2.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) the flow of charge (d) how much a part resists
4. 4.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
5. 5.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.📏 How many amperes (A) is 410 mA? =
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.True or false: the flow of charge is measured in volts (V). (a) False (b) True
10. 10.True or false: resistance is measured in ohms (Ω). (a) False (b) True
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.True or false: voltage is measured in ohms (Ω). (a) False (b) True
14. 14.📏 How many milliamperes (mA) is 2.89 A?
15. 15.True or false: the ammeter is joined across a part. (a) True (b) False
16. 16.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
17. 17.True or false: power is measured in amperes (A). (a) True (b) False
18. 18.📏 How many amperes (A) is 1170 mA? =
19. 19.📏 How many kilowatts (kW) is 400 W? =
20. 20.True or false: the voltmeter measures current. (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 850 W? =
22. 22.📏 How many kilo-ohms (kΩ) is 100 Ω? =
23. 23.📏 How many milliamperes (mA) is 1.15 A?
24. 24.True or false: power is measured in watts (W). (a) True (b) False
25. 25.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
26. 26.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
28. 28.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) voltage (d) power
29. 29.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
30. 30.📏 How many milliamperes (mA) is 0.81 A?
31. 31.📏 How many watts (W) is 2.7 kW?
32. 32.📏 How many milliamperes (mA) is 0.36 A?
33. 33.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) current (d) how much a part resists
34. 34.True or false: the voltmeter measures voltage. (a) True (b) False
35. 35.📏 How many watts (W) is 1.3 kW?
36. 36.📏 How many ohms (Ω) is 4 kΩ?
37. 37.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) voltage (d) resistance
38. 38.📏 How many ohms (Ω) is 5.6 kΩ?
39. 39.📏 How many amperes (A) is 2430 mA? =
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000

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