Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 316 · 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 kilowatts (kW) is 1300 W? =
2. 2.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
3. 3.📏 How many watts (W) is 2.3 kW?
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
5. 5.📏 How many watts (W) is 3.3 kW?
6. 6.True or false: energy used each second is measured in watts (W). (a) True (b) False
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
9. 9.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
10. 10.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
12. 12.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
13. 13.True or false: the flow of charge is measured in volts (V). (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
15. 15.True or false: the ammeter is joined across a part. (a) False (b) True
16. 16.📏 How many ohms (Ω) is 4.4 kΩ?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the flow of charge (d) energy used each second
19. 19.Which of these is measured in volts (V)? (a) current (b) voltage (c) energy used each second (d) the flow of charge
20. 20.📏 How many kilowatts (kW) is 2500 W? =
21. 21.True or false: the ammeter measures current. (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.📏 How many milliamperes (mA) is 0.23 A?
24. 24.📏 How many ohms (Ω) is 3.3 kΩ?
25. 25.📏 How many watts (W) is 3 kW?
26. 26.📏 How many amperes (A) is 1600 mA? =
27. 27.📏 How many milliamperes (mA) is 0.81 A?
28. 28.📏 How many ohms (Ω) is 5.5 kΩ?
29. 29.📏 How many ohms (Ω) is 0.9 kΩ?
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
32. 32.True or false: the voltmeter is joined across a part. (a) True (b) False
33. 33.📏 How many ohms (Ω) is 3.9 kΩ?
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.True or false: resistance is measured in ohms (Ω). (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
38. 38.📏 How many milliamperes (mA) is 1.78 A?
39. 39.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
40. 40.📏 How many milliamperes (mA) is 1.67 A?

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