Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 935 · 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.📏 How many amperes (A) is 1100 mA? =
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
3. 3.True or false: resistance is measured in ohms (Ω). (a) False (b) True
4. 4.📏 How many amperes (A) is 380 mA? =
5. 5.📏 How many watts (W) is 4.8 kW?
6. 6.📏 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
7. 7.📏 How many watts (W) is 4.1 kW?
8. 8.True or false: the push of a cell is measured in volts (V). (a) False (b) True
9. 9.True or false: energy used each second is measured in amperes (A). (a) True (b) False
10. 10.True or false: power is measured in watts (W). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
13. 13.📏 How many milliamperes (mA) is 1.76 A?
14. 14.📏 How many ohms (Ω) is 0.1 kΩ?
15. 15.📏 How many watts (W) is 2.5 kW?
16. 16.📏 How many milliamperes (mA) is 0.49 A?
17. 17.True or false: the push of a cell is measured in watts (W). (a) False (b) True
18. 18.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) resistance (d) energy used each second
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) current (d) the flow of charge
21. 21.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
22. 22.📏 How many watts (W) is 3.5 kW?
23. 23.Which of these is measured in watts (W)? (a) power (b) resistance (c) voltage (d) how much a part resists
24. 24.📏 How many amperes (A) is 1530 mA? =
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.True or false: voltage is measured in watts (W). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 1.2 kΩ?
30. 30.📏 How many ohms (Ω) is 5.1 kΩ?
31. 31.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the push of a cell (d) current
32. 32.📏 How many ohms (Ω) is 8 kΩ?
33. 33.📏 How many watts (W) is 3 kW?
34. 34.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) voltage (d) energy used each second
37. 37.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
38. 38.True or false: resistance is measured in amperes (A). (a) True (b) False
39. 39.📏 How many watts (W) is 4.3 kW?
40. 40.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)

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