Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 331 · 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 ohms (Ω) is 1.5 kΩ?
2. 2.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) power (d) the push of a cell
3. 3.True or false: the ammeter is joined across a part. (a) False (b) True
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
5. 5.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) current (d) the push of a cell
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 How many kilowatts (kW) is 1900 W? =
9. 9.True or false: energy used each second is measured in watts (W). (a) True (b) False
10. 10.📏 How many watts (W) is 0.1 kW?
11. 11.True or false: the voltmeter measures voltage. (a) False (b) True
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
13. 13.Which of these is measured in volts (V)? (a) power (b) current (c) how much a part resists (d) voltage
14. 14.📏 How many ohms (Ω) is 6.5 kΩ?
15. 15.True or false: the ammeter is joined in series. (a) True (b) False
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
17. 17.📏 How many watts (W) is 1.4 kW?
18. 18.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
24. 24.📏 How many ohms (Ω) is 6.3 kΩ?
25. 25.📏 How many watts (W) is 2.3 kW?
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
27. 27.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) resistance
28. 28.📏 How many milliamperes (mA) is 1.08 A?
29. 29.True or false: voltage is measured in volts (V). (a) True (b) False
30. 30.True or false: voltage is measured in amperes (A). (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 1100 W? =
32. 32.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) current (d) resistance
33. 33.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
34. 34.📏 How many watts (W) is 1.3 kW?
35. 35.📏 How many watts (W) is 4.3 kW?
36. 36.📏 How many kilowatts (kW) is 1750 W? =
37. 37.📏 How many watts (W) is 2 kW?
38. 38.True or false: voltage is measured in watts (W). (a) False (b) True
39. 39.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) current (d) voltage
40. 40.True or false: the ammeter measures voltage. (a) False (b) True

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