Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 197 · 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: energy used each second is measured in ohms (Ω). (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
3. 3.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
4. 4.True or false: power is measured in volts (V). (a) True (b) False
5. 5.📏 How many amperes (A) is 2430 mA? =
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.📏 How many amperes (A) is 360 mA? =
9. 9.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) the push of a cell (d) power
10. 10.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
11. 11.True or false: resistance is measured in ohms (Ω). (a) True (b) False
12. 12.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
13. 13.True or false: voltage is measured in amperes (A). (a) False (b) True
14. 14.True or false: the voltmeter is joined in series. (a) False (b) True
15. 15.📏 How many amperes (A) is 600 mA? =
16. 16.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.True or false: energy used each second is measured in volts (V). (a) False (b) True
18. 18.True or false: resistance is measured in amperes (A). (a) False (b) True
19. 19.📏 How many amperes (A) is 370 mA? =
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
22. 22.📏 How many milliamperes (mA) is 2.98 A?
23. 23.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
24. 24.True or false: the ammeter measures current. (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
26. 26.True or false: the push of a cell is measured in watts (W). (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
28. 28.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) resistance (d) energy used each second
29. 29.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
30. 30.True or false: current is measured in ohms (Ω). (a) False (b) True
31. 31.True or false: voltage is measured in volts (V). (a) False (b) True
32. 32.📏 How many ohms (Ω) is 8.7 kΩ?
33. 33.📏 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
34. 34.True or false: energy used each second is measured in watts (W). (a) True (b) False
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
36. 36.📏 How many milliamperes (mA) is 1.37 A?
37. 37.📏 How many kilowatts (kW) is 4800 W? =
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.📏 How many amperes (A) is 1090 mA? =
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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