Mehlala ea Lipotso le Puisano ea Motlakase oa Motlakase
Motlakase ke mohopolo oa motheo fisiks, oa bohlokoa eseng feela thutong ea thuto empa hape le bophelong ba letsatsi le letsatsi, indastering le theknolojing ea sejoale-joale. Ho utloisisa motlakase ho re lumella ho sebelisa lisebelisoa tse fapaneng tsa elektroniki, ho utloisisa litsamaiso tsa motlakase, esita le ho haha kapa ho lokisa lisebelisoa tsa elektroniki. Sengoloa sena se tla hlalosa mehlala e 'maloa ea mathata le lipuisano mabapi le motlakase ho thusa ho tebisa kutloisiso ea hau ea sehlooho sena.
Tlhaloso ea Motlakase oa Motlakase
Motlakase ke phallo ea tjhaja ea motlakase ka har'a conductor, hangata ka sebopeho sa lielektrone ka har'a conductor joalo ka terata ea koporo. Motlakase o lekanngoa ka li-ampere (A), e leng yuniti ea motheo ho Sistimi ea Machaba ea Liyuniti (SI).
Molao oa Ohm
E 'ngoe ea melao-motheo ea motheo e sebelisoang ho hlalosa motlakase ke Molao oa Ohm. Molao ona o re, "Motlakase o fetang ka har'a conductor pakeng tsa lintlha tse peli o lekana ka ho toba le motlakase ho pholletsa le lintlha tse peli 'me o lekana ka ho fapaneng le khanyetso." Foromo ea lipalo bakeng sa Molao oa Ohm ke:
\[ I = \frac{V}{R} \]
Di mana:
– \( I \) ke hona joale ka li-ampere (A),
– \( V \) ke motlakase ka di-volts (V),
– \( R \) ke khanyetso ho ohms (Ω).
Mohlala oa Potso ea 1: Ho Bala Hona Joale ho Sebelisa Molao oa Ohm
Potso:
Ha o nahana ka terata e nang le khanyetso ea 10 ohms le motlakase oa 20 volts tse sebelisitsoeng lipheletsong tsa terata, bala motlakase o phallang ka har'a terata.
Puisano:
Sebelisa foromo ea Molao oa Ohm:
\[ I = \frac{V}{R} \]
Di mana:
– \( V = 20 \mongolo{ V} \),
– \( R = 10 \mongolo{Ω} \).
\[ I = \frac{20 \text{ V}}{10 \text{ Ω}} = 2 \text{ A} \]
Kahoo, motlakase o phallang ka hara terata ke 2 amperes.
Mohlala oa Potso ea 2: Ho Bala Motlakase ho Sebelisa Molao oa Ohm
Potso:
Betri e fana ka motlakase oa li-ampere tse 3 ka resistor ea 15-ohm. Voltage e tlisoang ke betri ke efe?
Puisano:
Sebelisa foromo ea Molao oa Ohm e fetotsoeng ho:
\[ V = I \makgetlo R \]
Di mana:
– \( Ke = 3 \mongolo{ A} \),
– \( R = 15 \mongolo{Ω} \).
\[ V = 3 \mongolo{ A} \makgetlo a 15 \mongolo{ Ω} = 45 \mongolo{ V} \]
Kahoo, motlakase o fanoang ke betri ke 45 volts.
Mohlala Potso ea 3: Ho Bala Khanyetso ho Sebelisa Molao oa Ohm
Potso:
Potoloho e na le motlakase oa li-volt tse 12 le motlakase oa li-ampere tse 4. Bala boleng ba khanyetso ea potoloho.
Puisano:
Sebelisa foromo ea Molao oa Ohm e fetotsoeng ho:
\[ R = \frac{V}{I} \]
Di mana:
– \( V = 12 \mongolo{ V} \),
– \( Ke = 4 \mongolo{ A} \).
\[ R = \frac{12 \mongolo{ V}}{4 \mongolo{ A}} = 3 \mongolo{ Ω} \]
Kahoo, boleng ba khanyetso potolohong ke 3 ohms.
Mohlala oa Potso ea 4: Potoloho ea Letoto
Potso:
Li-resistor tse peli, e 'ngoe le e 'ngoe e nang le khanyetso ea 6 ohms le 4 ohms, li hokahantsoe ka tatellano mohloling oa 20-volt. Bala motlakase o phallang ka har'a potoloho.
Puisano:
Bakeng sa li-resistor tse latellanang, khanyetso eohle \( R_{\text{total}} \) ke kakaretso ea khanyetso ka bonngoe:
\[ R_{\text{total}} = R_1 + R_2 = 6 \text{Ω} + 4 \text{Ω} = 10 \text{Ω} \]
Sebelisa foromo ea Molao oa Ohm:
\[ I = \frac{V}{R_{\text{total}}} \]
Di mana:
– \( V = 20 \mongolo{ V} \),
– \( R_{\ text{total}} = 10 \mongolo{ Ω} \).
\[ I = \frac{20 \text{ V}}{10 \text{ Ω}} = 2 \text{ A} \]
Kahoo, motlakase o phallang ka har'a potoloho ke 2 ampere.
Mohlala oa Potso ea 5: Potoloho e Tšoanang
Potso:
Li-resistor tse peli, e 'ngoe le e 'ngoe e nang le khanyetso ea 8 ohms le 4 ohms, li hokahane ka ho lekana le mohloli oa 12-volt. Bala kakaretso ea motlakase o phallang ka har'a potoloho.
Puisano:
Taba ea pele, bala khanyetso eohle \( R_{\text{total}} \) ea li-resistor tse hokahantsoeng ka nako e le 'ngoe u sebelisa foromo:
\[ \frac{1}{R_{\text{total}}} = \frac{1}{R_1} + \frac{1}{R_2} \]
Di mana:
– \( R_1 = 8 \mongolo{Ω} \),
– \( R_2 = 4 \mongolo{Ω} \).
\[ \frac{1}{R_{\text{total}}} = \frac{1}{8 \text{ Ω}} + \frac{1}{4 \text{ Ω}} = \frac{1}{8} + \frac{2}{8} = \frac{3}{8} \]
\[ R_{\text{total}} = \frac{8}{3} \hoo e ka bang 2.67 \text{Ω} \]
Sebelisa foromo ea Molao oa Ohm:
\[ I = \frac{V}{R_{\text{total}}} \]
Di mana:
– \( V = 12 \mongolo{ V} \),
– \( R_{\text{total}} \hoo e ka bang 2.67 \text{Ω} \).
\[ I \approx \frac{12 \text{ V}}{2.67 \text{ Ω}} \approx 4.49 \text{ A} \]
Kahoo, motlakase o phallang ka potoloho ke hoo e ka bang 4.49 amperes.
Mohlala oa Potso ea 6: Ho Sebelisa Molao oa Kirchoff
Molao oa Kirchoff
Ho na le melao e 'meli ea Kirchoff e atisang ho sebelisoa tlhahlobong ea potoloho ea motlakase:
1. Molao oa Hona Joale oa Kirchoff (KCL): Palo ea hona joale e kenang ntlha e tšoana le palo ea hona joale e tsoang ntlha eo.
2. Molao oa Voltage oa Kirchoff (KVL): Kakaretso ea voltages tse sekhutlong se koetsoeng e tlameha ho lekana le lefela.
Potso:
Ho fanoe ka potoloho e nang le makala a mabeli a bapileng. Lekala la pele le na le resistor ea 3-ohm 'me lekala la bobeli le na le resistor ea 6-ohm, ka bobeli li hokahane le mohloli oa 18-volt. Bala motlakase o phallang lekaleng ka leng le motlakase oohle o potolohang.
Puisano:
Sebelisa Molao oa Ohm bakeng sa lekala ka leng:
Bakeng sa lekala la pele:
\[ I_1 = \frac{V}{R_1} = \frac{18 \text{ V}}{3 \text{Ω}} = 6 \text{ A} \]
Bakeng sa lekala la bobeli:
\[ I_2 = \frac{V}{R_2} = \frac{18 \text{ V}}{6 \text{Ω}} = 3 \text{ A} \]
Kakaretso ea hona joale ke kakaretso ea maqhubu a tsoang makaleng ka bobeli:
\[ I_{\text{total}} = I_1 + I_2 = 6 \text{ A} + 3 \text{ A} = 9 \text{ A} \]
Kahoo, motlakase o phallang ka har'a lekala ka leng ke li-ampere tse 6 le li-ampere tse 3, 'me motlakase o phallang ka kakaretso potolohong ke li-ampere tse 9.
Ka ho sebelisa mehlala le litlhaloso tse kaholimo, re tšepa hore u tla utloisisa haholoanyane motlakase oa motlakase. Ho tseba likhopolo tse kang Molao oa Ohm, lipotoloho tsa letoto le tse bapileng, le melao ea Kirchoff ke senotlolo sa ho rarolla mathata a fapaneng a amanang le motlakase oa motlakase fisiks.
