Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 205 · 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 2110 mA? =
2. 2.True or false: energy used each second is measured in amperes (A). (a) True (b) False
3. 3.📏 How many kilowatts (kW) is 2950 W? =
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
5. 5.📏 How many amperes (A) is 2970 mA? =
6. 6.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.True or false: how much a part resists is measured in volts (V). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
10. 10.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.True or false: the voltmeter is joined in series. (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 3700 W? =
13. 13.📏 How many watts (W) is 1.8 kW?
14. 14.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) the push of a cell
15. 15.📏 How many ohms (Ω) is 3.8 kΩ?
16. 16.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 How many watts (W) is 4.6 kW?
18. 18.📏 How many ohms (Ω) is 0.1 kΩ?
19. 19.📏 How many milliamperes (mA) is 2.75 A?
20. 20.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
22. 22.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
24. 24.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
25. 25.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
27. 27.📏 How many watts (W) is 4.8 kW?
28. 28.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
30. 30.📏 How many ohms (Ω) is 8.7 kΩ?
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
32. 32.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) current (d) power
34. 34.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
35. 35.📏 How many watts (W) is 3 kW?
36. 36.Which of these is measured in volts (V)? (a) power (b) current (c) the flow of charge (d) the push of a cell
37. 37.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) energy used each second (d) power
38. 38.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
39. 39.Which of these is measured in ohms (Ω)? (a) current (b) power (c) resistance (d) voltage
40. 40.📏 How many kilowatts (kW) is 4950 W? =

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