Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 92 · 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 amperes (A)? (a) resistance (b) energy used each second (c) the push of a cell (d) the flow of charge
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
3. 3.True or false: the ammeter is joined across a part. (a) False (b) True
4. 4.📏 How many ohms (Ω) is 7.6 kΩ?
5. 5.📏 How many watts (W) is 1.7 kW?
6. 6.📏 How many ohms (Ω) is 6.7 kΩ?
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 How many ohms (Ω) is 6.1 kΩ?
10. 10.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) voltage (d) resistance
11. 11.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
13. 13.📏 How many watts (W) is 4.1 kW?
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
16. 16.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) energy used each second (d) the flow of charge
17. 17.True or false: the voltmeter is joined across a part. (a) False (b) True
18. 18.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) current (d) power
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
20. 20.True or false: energy used each second is measured in amperes (A). (a) True (b) False
21. 21.True or false: the push of a cell is measured in watts (W). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.📏 How many kilowatts (kW) is 3400 W? =
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
25. 25.📏 How many milliamperes (mA) is 2.26 A?
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
28. 28.📏 How many amperes (A) is 1480 mA? =
29. 29.📏 How many watts (W) is 2.3 kW?
30. 30.📏 How many milliamperes (mA) is 1.87 A?
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) current (d) the push of a cell
34. 34.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
35. 35.📏 How many watts (W) is 1 kW?
36. 36.📏 How many milliamperes (mA) is 0.65 A?
37. 37.True or false: current is measured in amperes (A). (a) True (b) False
38. 38.True or false: the voltmeter measures current. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 600 W? =
40. 40.True or false: resistance is measured in ohms (Ω). (a) False (b) True

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