Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 660 · 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) the flow of charge (b) the push of a cell (c) how much a part resists (d) resistance
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) current (d) power
3. 3.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.📏 How many ohms (Ω) is 0.9 kΩ?
7. 7.True or false: power is measured in volts (V). (a) True (b) False
8. 8.📏 How many watts (W) is 0.9 kW?
9. 9.📏 How many kilowatts (kW) is 2600 W? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
13. 13.True or false: resistance is measured in ohms (Ω). (a) False (b) True
14. 14.True or false: voltage is measured in amperes (A). (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 1.61 A?
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.True or false: energy used each second is measured in watts (W). (a) False (b) True
18. 18.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) the push of a cell (d) energy used each second
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
21. 21.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
23. 23.True or false: the voltmeter measures current. (a) False (b) True
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
25. 25.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) power
26. 26.📏 How many kilowatts (kW) is 1150 W? =
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many watts (W) is 0.2 kW?
29. 29.📏 How many amperes (A) is 1490 mA? =
30. 30.📏 How many milliamperes (mA) is 0.62 A?
31. 31.True or false: current is measured in volts (V). (a) False (b) True
32. 32.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
33. 33.📏 How many kilowatts (kW) is 4450 W? =
34. 34.True or false: how much a part resists is measured in watts (W). (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 2.01 A?
36. 36.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
37. 37.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) current (d) the flow of charge
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 1200 W? =
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure

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