Malosiaga eletise - faʻafitauli ma fofo

28 Malosiaga eletise – faʻafitauli ma fofo

1. Fuafua le tafe eletise o se moli e 10 Watt ua mamanuina mo le 12 Volts.

Ua iloa:

Malosiaga (P) = 10 Uati

Voltage (V) = 220 Volt

Manaomia: Tafe eletise

Fofo:

Malosiaga o le lamepa = 10 Watts = 10 Joules/sekone

O le fua fa'atatau o lo'o i lalo o lo'o fa'aalia ai le sootaga i le va o le malosiaga eletise (P), le gafatia eletise (V) ma le tafe eletise (I) o lo'o taua i le fua fa'atatau o lo'o i lalo:

P = VI

Tafe eletise:

I = P / V = ​​​​10 / 220 = 1/22 = 0.045 Ampere

2. Fuafua le malosiaga eletise e tusa ai ma le matagaluega eletise o loʻo i lalo.

Ua iloa:

Tete'e 1 (R ₁ ) = 6 Ω

Tete'e 2 (R ₂ ) = 6 Ω

Voltage eletise (V) = 24 Volts

Manaomia: Malosiaga eletise

Fofo:

Tete'e tutusa:

O le R ₁ ma le R ₂ ua feso'ota'i fa'asolosolo. O le resistor tutusa:

R = R ₁ + R ₂ = 6 Ω + 6 Ω = 12 Ω

O le tafega eletise:

I = V/R = 24/12 = 2 Ampere

Malosiaga eletise:

P = VI = (24)(2) = 48 Watts = 48 Joules/sekone

3. Fuafua le tafe eletise o le 3 kiloWatt ua mamanuina mo le 150 Volts.

Ua iloa:

Malosiaga eletise (P) = 3 kiloWatt = 3000 Watt

Voltage eletise (V) = 150 Volts

Manaomia: Tafe eletise (I)

Fofo:

O le sootaga o le malosiaga eletise (P), le gafatia eletise (V) ma le tafe eletise (I) o loʻo taʻua i le fua faʻatatau o loʻo i lalo:

P = VI

O le tafega eletise:

I = P/V

I = 3000 Watts / 150 Volts

I = 20 Amperes

4. Fuafua le malosiaga mo se tetee \(10\,\Omega\) faatasi ai ma se tafega eletise \(5\,A\).
Tali: \( P = I^2 R = 5^2 \times 10 = 250\,W \)

5. Fuafua le malosiaga mo se matagaluega e iai le tete'e i le \(12\,V\) ma le \(4\,\Omega\).
Tali: \( P = \frac{V^2}{R} = \frac{12^2}{4} = 36\,W \)

6. O se moli uila \(60\,W\) e galue mo le \(3\,h\). Fuafua le malosi e fa'aaogaina.
Tali: \( E = Pt = 60 \times 3 = 180\,Wh = 0.18\,kWh \)

7. Fuafua le tafe eletise mo se masini \(200\,W\) i luga o se sapalai \(100\,V\).
Tali: \( I = \frac{P}{V} = \frac{200}{100} = 2\,A \)

8. Saili le tete'e o se masini fa'avevela e fa'aaogaina le \(1200\,W\) i le \(240\,V\).
Tali: \( R = \frac{V^2}{P} = \frac{240^2}{1200} = 48\,\Omega \)

9. O se maa \(9\,V\) ua feso'ota'i i se resistor \(3\,\Omega\). Saili le malosiaga ua fa'aumatia.
Tali: \( P = \frac{V^2}{R} = \frac{9^2}{3} = 27\,W \)

10. Fuafua le malosiaga i totonu o se resistor \(10\,\Omega\) faatasi ai ma se sapalai \(100\,V\).
Tali: \( P = \frac{V^2}{R} = \frac{100^2}{10} = 1000\,W \)

11. Fuafua le voltage e manaʻomia e faʻataʻapeʻape ai le \(50\,W\) i totonu o se \(10\,\Omega\) resistor.
Tali: \( V = \sqrt{PR} = \sqrt{50 \times 10} = 22.36\,V \)

12. E fa'aaogā e se afi le \(1500\,W\) ma e tamo'e mo le \(4\,h\). Saili le malosi e fa'aaogāina.
Tali: \( E = Pt = 1500 \times 4 = 6000\,Wh = 6\,kWh \)

13. Saili le tafe o le eletise o se sapalai \(240\,V\) pe afai o le malosiaga o le \(1200\,W\).
Tali: \( I = \frac{P}{V} = \frac{1200}{240} = 5\,A \)

14. Fuafua le tete'e mo se polo uila \(100\,W\) o lo'o fa'agaoioia i le \(200\,V\).
Tali: \( R = \frac{V^2}{P} = \frac{200^2}{100} = 400\,\Omega \)

15. Fuafua le malosiaga i totonu o se matagaluega \(3\,A\) faatasi ai ma se tetee \(15\,\Omega\).
Tali: \( P = I^2 R = 3^2 \times 15 = 135\,W \)

16. Fuafua le voltage e manaʻomia e faʻataʻapeʻape ai le \(100\,W\) i totonu o se \(20\,\Omega\) resistor.
Tali: \( V = \sqrt{PR} = \sqrt{100 \times 20} = 44.72\,V \)

17. Saili le malosi e fa'aaogaina e se ili \(300\,W\) o lo'o tamo'e mo le \(2\,h\).
Tali: \( E = Pt = 300 \times 2 = 600\,Wh = 0.6\,kWh \)

18. Fuafua le tafe o le eletise i totonu o se matagaluega ma le malosiaga \(1000\,W\) ma le voltage \(250\,V\).
Tali: \( I = \frac{P}{V} = \frac{1000}{250} = 4\,A \)

19. Fuafua le tete'e o se toaster \(400\,W\) o lo'o fa'agaoioia i le \(100\,V\).
Tali: \( R = \frac{V^2}{P} = \frac{100^2}{400} = 25\,\Omega \)

20. Saili le malosiaga mo se voltage \(20\,V\) i luga o se resistor \(5\,\Omega\).
Tali: \( P = \frac{V^2}{R} = \frac{20^2}{5} = 80\,W \)

21. Fuafua le voltage e manaʻomia e tuʻuina atu ai le \(200\,W\) i se \(25\,\Omega\) resistor.
Tali: \( V = \sqrt{PR} = \sqrt{200 \times 25} = 50\,V \)

22. Fuafua le malosi e faʻaaogaina e se masini \(500\,W\) o loʻo faʻagaoioia mo le \(5\,h\).
Tali: \( E = Pt = 500 \times 5 = 2500\,Wh = 2.5\,kWh \)

23. Saili le tafe o le eletise mo se polo uila \(60\,W\) o loʻo faʻagaoioia i le \(120\,V\).
Tali: \( I = \frac{P}{V} = \frac{60}{120} = 0.5\,A \)

24. Fuafua le tete'e mo se moli \(40\,W\) o lo'o tamo'e i le \(20\,V\).
Tali: \( R = \frac{V^2}{P} = \frac{20^2}{40} = 10\,\Omega \)

25. Fuafua le malosiaga i totonu o se matagaluega \(5\,A\) faatasi ai ma se tetee \(12\,\Omega\).
Tali: \( P = I^2 R = 5^2 \times 12 = 300\,W \)

26. Fuafua le voltage e manaʻomia e tuʻuina atu ai le \(150\,W\) i se \(15\,\Omega\) resistor.
Tali: \( V = \sqrt{PR} = \sqrt{150 \times 15} = 61.24\,V \)

27. Saili le malosiaga e fa'aaogaina e se \(800\,W\) air conditioner o lo'o fa'agaoioia mo le \(3\,h\).
Tali: \( E = Pt = 800 \times 3 = 2400\,Wh = 2.4\,kWh \)

28. Fuafua le tafe o le eletise i totonu o se matagaluega e iai le malosiaga \(500\,W\) ma le voltage \(125\,V\).
Tali: \( I = \frac{P}{V} = \frac{500}{125} = 4\,A \)