Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 957 · 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: current is measured in ohms (Ω). (a) True (b) False
2. 2.📏 How many ohms (Ω) is 5.8 kΩ?
3. 3.True or false: energy used each second is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) current (d) energy used each second
5. 5.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
6. 6.📏 How many kilowatts (kW) is 1150 W? =
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
8. 8.📏 How many milliamperes (mA) is 2.84 A?
9. 9.📏 How many milliamperes (mA) is 1.17 A?
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.True or false: the push of a cell is measured in volts (V). (a) True (b) False
12. 12.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
13. 13.📏 How many kilowatts (kW) is 200 W? =
14. 14.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) how much a part resists (d) current
15. 15.True or false: resistance is measured in watts (W). (a) True (b) False
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.True or false: voltage is measured in volts (V). (a) False (b) True
19. 19.True or false: voltage is measured in ohms (Ω). (a) False (b) True
20. 20.📏 How many kilowatts (kW) is 1200 W? =
21. 21.📏 How many kilowatts (kW) is 500 W? =
22. 22.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
23. 23.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.True or false: the voltmeter is joined across a part. (a) False (b) True
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
27. 27.True or false: the flow of charge is measured in volts (V). (a) True (b) False
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
29. 29.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
30. 30.True or false: the voltmeter measures current. (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
32. 32.📏 How many milliamperes (mA) is 0.18 A?
33. 33.📏 How many kilowatts (kW) is 1350 W? =
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
36. 36.📏 How many milliamperes (mA) is 0.08 A?
37. 37.📏 How many amperes (A) is 2120 mA? =
38. 38.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) the flow of charge
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.📏 How many watts (W) is 0.3 kW?

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