Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 335 · 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) resistance (c) the push of a cell (d) energy used each second
2. 2.📏 How many ohms (Ω) is 8.6 kΩ?
3. 3.📏 How many milliamperes (mA) is 2.8 A?
4. 4.📏 How many amperes (A) is 2040 mA? =
5. 5.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the flow of charge (d) the push of a cell
6. 6.True or false: the voltmeter measures current. (a) False (b) True
7. 7.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) energy used each second (d) current
8. 8.📏 How many amperes (A) is 710 mA? =
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
10. 10.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.True or false: the voltmeter is joined in series. (a) False (b) True
12. 12.📏 How many amperes (A) is 1710 mA? =
13. 13.📏 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
14. 14.📏 How many amperes (A) is 170 mA? =
15. 15.📏 How many amperes (A) is 370 mA? =
16. 16.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
17. 17.True or false: voltage is measured in watts (W). (a) True (b) False
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 volts (V)? (a) resistance (b) voltage (c) power (d) how much a part resists
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
21. 21.📏 How many amperes (A) is 2470 mA? =
22. 22.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
23. 23.True or false: how much a part resists is measured in volts (V). (a) True (b) False
24. 24.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
27. 27.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) the push of a cell
28. 28.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.True or false: current is measured in volts (V). (a) False (b) True
31. 31.True or false: resistance is measured in watts (W). (a) True (b) False
32. 32.📏 How many watts (W) is 0.1 kW?
33. 33.True or false: voltage is measured in volts (V). (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 250 W? =
35. 35.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) energy used each second (d) voltage
36. 36.📏 How many amperes (A) is 50 mA? =
37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
38. 38.📏 How many watts (W) is 0.8 kW?
39. 39.True or false: power is measured in amperes (A). (a) True (b) False
40. 40.📏 How many ohms (Ω) is 3.1 kΩ?

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