Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 278 · 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.True or false: the voltmeter measures voltage. (a) False (b) True
2. 2.Which of these is measured in watts (W)? (a) resistance (b) current (c) the flow of charge (d) power
3. 3.📏 How many amperes (A) is 470 mA? =
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 How many milliamperes (mA) is 1.15 A?
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.📏 How many kilo-ohms (kΩ) is 900 Ω? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 How many amperes (A) is 2790 mA? =
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.📏 How many amperes (A) is 2840 mA? =
17. 17.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) energy used each second (d) power
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
20. 20.📏 How many kilowatts (kW) is 150 W? =
21. 21.True or false: power is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the ammeter measures voltage. (a) False (b) True
23. 23.True or false: resistance is measured in watts (W). (a) True (b) False
24. 24.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
25. 25.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 How many kilowatts (kW) is 2300 W? =
28. 28.True or false: voltage is measured in watts (W). (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) resistance (d) voltage
30. 30.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
31. 31.True or false: the flow of charge is measured in volts (V). (a) True (b) False
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.True or false: resistance is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many ohms (Ω) is 7.1 kΩ?
35. 35.True or false: energy used each second is measured in watts (W). (a) True (b) False
36. 36.True or false: power is measured in volts (V). (a) False (b) True
37. 37.True or false: the voltmeter measures current. (a) False (b) True
38. 38.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 1800 W? =

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