Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 816 · 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 of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) resistance
2. 2.True or false: the voltmeter is joined across a part. (a) False (b) True
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
4. 4.📏 How many amperes (A) is 2750 mA? =
5. 5.True or false: current is measured in watts (W). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 2.31 A?
7. 7.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) voltage (d) current
8. 8.📏 How many kilowatts (kW) is 4650 W? =
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
10. 10.True or false: the ammeter is joined across a part. (a) True (b) False
11. 11.Which of these is measured in volts (V)? (a) power (b) current (c) the push of a cell (d) the flow of charge
12. 12.True or false: current is measured in amperes (A). (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
14. 14.True or false: the voltmeter measures current. (a) True (b) False
15. 15.📏 How many milliamperes (mA) is 1.15 A?
16. 16.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
17. 17.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
19. 19.📏 How many milliamperes (mA) is 2.2 A?
20. 20.Which of these is measured in amperes (A)? (a) power (b) resistance (c) the flow of charge (d) the push of a cell
21. 21.True or false: power is measured in ohms (Ω). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: the push of a cell is measured in volts (V). (a) False (b) True
24. 24.📏 How many milliamperes (mA) is 0.26 A?
25. 25.📏 How many milliamperes (mA) is 2.59 A?
26. 26.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) current (d) power
27. 27.True or false: resistance is measured in ohms (Ω). (a) False (b) True
28. 28.True or false: the flow of charge is measured in volts (V). (a) False (b) True
29. 29.📏 How many amperes (A) is 540 mA? =
30. 30.📏 How many watts (W) is 2.4 kW?
31. 31.📏 How many kilowatts (kW) is 1000 W? =
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
33. 33.📏 How many milliamperes (mA) is 1.78 A?
34. 34.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
37. 37.True or false: voltage is measured in amperes (A). (a) False (b) True
38. 38.📏 How many watts (W) is 2.2 kW?
39. 39.Which of these is measured in volts (V)? (a) current (b) power (c) energy used each second (d) voltage
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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