Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 612 · 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 2360 mA? =
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.True or false: the push of a cell is measured in watts (W). (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) the push of a cell (d) power
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
6. 6.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the flow of charge (d) how much a part resists
7. 7.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
8. 8.True or false: resistance is measured in watts (W). (a) True (b) False
9. 9.📏 How many amperes (A) is 2840 mA? =
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
11. 11.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) current (d) voltage
12. 12.📏 How many watts (W) is 2.3 kW?
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.📏 How many amperes (A) is 1690 mA? =
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
16. 16.📏 How many ohms (Ω) is 6 kΩ?
17. 17.True or false: resistance is measured in volts (V). (a) False (b) True
18. 18.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) resistance (d) current
19. 19.📏 How many amperes (A) is 510 mA? =
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
21. 21.📏 How many amperes (A) is 10 mA? =
22. 22.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
27. 27.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.True or false: current is measured in watts (W). (a) True (b) False
29. 29.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) current
30. 30.True or false: the voltmeter is joined across a part. (a) True (b) False
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
32. 32.True or false: voltage is measured in watts (W). (a) True (b) False
33. 33.📏 How many milliamperes (mA) is 1.69 A?
34. 34.True or false: resistance is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many watts (W) is 4.3 kW?
36. 36.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) how much a part resists
37. 37.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
38. 38.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
39. 39.📏 How many kilowatts (kW) is 950 W? =
40. 40.True or false: voltage is measured in amperes (A). (a) False (b) True

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