Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 105 · 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 ammeter is joined across a part. (a) False (b) True
2. 2.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) current (d) how much a part resists
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) current (d) resistance
5. 5.📏 How many kilowatts (kW) is 500 W? =
6. 6.📏 How many kilowatts (kW) is 2000 W? =
7. 7.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) current (d) how much a part resists
11. 11.📏 How many amperes (A) is 2580 mA? =
12. 12.True or false: power is measured in volts (V). (a) True (b) False
13. 13.📏 How many watts (W) is 0.6 kW?
14. 14.📏 How many kilo-ohms (kΩ) is 500 Ω? =
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
17. 17.📏 How many ohms (Ω) is 4.6 kΩ?
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) resistance
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
21. 21.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
22. 22.📏 How many amperes (A) is 70 mA? =
23. 23.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
25. 25.True or false: the voltmeter measures current. (a) True (b) False
26. 26.📏 How many amperes (A) is 2430 mA? =
27. 27.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
28. 28.📏 How many kilowatts (kW) is 2800 W? =
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
30. 30.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) the flow of charge (d) current
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.📏 How many amperes (A) is 850 mA? =
33. 33.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 2.51 A?
35. 35.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) how much a part resists (d) the push of a cell
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.📏 How many ohms (Ω) is 9.5 kΩ?
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 2200 W? =

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