Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 536 · 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 milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
2. 2.📏 How many amperes (A) is 380 mA? =
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.📏 How many milliamperes (mA) is 1.42 A?
5. 5.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) current (d) voltage
6. 6.📏 How many kilowatts (kW) is 4450 W? =
7. 7.📏 How many watts (W) is 4.1 kW?
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
9. 9.📏 How many kilowatts (kW) is 1950 W? =
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
11. 11.📏 How many milliamperes (mA) is 1.15 A?
12. 12.True or false: the flow of charge is measured in volts (V). (a) False (b) True
13. 13.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
14. 14.📏 How many kilowatts (kW) is 4600 W? =
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.📏 How many watts (W) is 0.4 kW?
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.True or false: the ammeter is joined in series. (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 2.81 A?
21. 21.True or false: the voltmeter is joined in series. (a) False (b) True
22. 22.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) energy used each second (d) how much a part resists
23. 23.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) the flow of charge (d) energy used each second
24. 24.True or false: the ammeter measures current. (a) False (b) True
25. 25.True or false: the voltmeter is joined across a part. (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
27. 27.📏 How many kilo-ohms (kΩ) is 700 Ω? =
28. 28.📏 How many kilowatts (kW) is 4250 W? =
29. 29.📏 How many kilowatts (kW) is 3000 W? =
30. 30.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
32. 32.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
33. 33.📏 How many ohms (Ω) is 2.5 kΩ?
34. 34.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
35. 35.📏 How many amperes (A) is 140 mA? =
36. 36.True or false: the ammeter measures voltage. (a) False (b) True
37. 37.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
39. 39.📏 How many ohms (Ω) is 10 kΩ?
40. 40.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) current

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