Usoro iwu Ampere maka mgbanwe EMF nke na-akpata mgbanwe

Ajụjụ na usoro ihe atụ maka iwu Ampere nke transformer kpaliri EMF

Iwu Ampere

1. Dịka H.C. Oersted si kwuo, ọkụ eletrik na-emepụta oghere magnet. Site n'ịmepụta echiche a, eriri na-ebu ọkụ eletrik na-emepụtakwa oghere magnet. eriri nke, mgbe ọ na-ebu ọkụ eletrik, na-emepụta oghere magnet yiri nke magnet mmanya na-emepụta bụ...

A. toroid
B. solenoid
C. waya a gbanyere agbagọ
D. akụkụ anọ eriri igwe

Mkparịta ụka

Magnet mmanya nwere ogidi abụọ: ogidi ugwu na ogidi ndịda. Ahịrị ubi magnet nke magnet mmanya na-emepụta na-anọchi anya ogidi ubi magnet, nke sitere na ogidi ugwu wee banye na ogidi ndịda.
Ọdụ magnet nke magnet mmanya na-emepụta yiri nke magnet nke solenoid na-emepụta, dịka ọ dị na foto dị n'akụkụ.
Solenoid bụ waya ogologo nke nwere ọtụtụ ntụgharị. Foto dị n'okpuru na-egosi ihe atụ nke ime magnet site na iji eriri waya nke na-ebu ọkụ eletrik gburugburu ya. Enwere ike iji iwu aka nri chọpụta ụzọ nke ogwe magnet.
Gbatịa aka nri gị, tinye ya ka ọ bụrụ na aka gị ga-eche ihu gị. Gbatịa mkpịsị aka ukwu gị ma gbatịa mkpịsị aka anọ ndị ọzọ gaa n'ihu gị. Ụzọ nke mgbagọ nke mkpịsị aka anọ ahụ kwekọrọ na ntụziaka nke mmiri na-asọpụta n'ime eriri ahụ, ebe mkpịsị aka ukwu na-atụ aka na ogwe aka ugwu nke ubi magnet. Mkpịsị aka ukwu ahụ na-atụ aka na axis N, yabụ N na-anọchite anya ogwe aka ugwu nke magnet ahụ na M na-anọchite anya ogwe aka ndịda nke magnet ahụ.
Azịza ziri ezi bụ B.

Toroid

2. Ọdụ magnet nke toroid nke na-ebu ọkụ eletrik mepụtara nwere ntụziaka….

A. kwụ ọtọ n'elu elu nke toroid
B. okirikiri
C. azụ na azụ
D. dabere na oge

Mkparịta ụka
Toroid bụ solenoid okirikiri, ya mere site na iji iwu aka nri, oghere magnet nke toroid na-emepụta nwere ntụziaka okirikiri.
Azịza ziri ezi bụ B.

EMF e tinyere n'ime ya

3. Ọ bụrụ na e bugharịa magnet n'ime eriri, ike electromotive nke na-akpali ga-eme n'etiti nsọtụ eriri. Ihe a na-akpata ya bụ...
A. E nwere mgbanwe n'ụzọ nke ebe ndọta nke na-ebipụ eriri ahụ.
B. enwere mgbanwe na ogidi magnetik ndị na-ebipụ eriri igwe ahụ
C. Enwere mgbanwe na ọnụọgụgụ ahịrị ike magnetik nke na-ebipụ eriri ahụ.
D. enwere mbelata na ọnụọgụgụ ahịrị magnetik nke ike na-ebipụ eriri ahụ
Mkparịta ụka
A na-emepụta ike electromotive nke na-akpali akpali site na mpaghara magnet na-agbanwe agbanwe. Oke nke EMF nke na-akpali akpali anaghị adabere na ọnụego mgbanwe nke mpaghara magnet kama ọ dabere na ọnụego mgbanwe nke mgbanwe nke ebe magnet. Mgbawa magnet bụ ọnụọgụ nke ahịrị ebe magnet na-agafe na coil. Usoro mgbakọ na mwepụ maka mgbawa magnet bụ Φ_B = BA cos θ. Ọ bụrụ na ahịrị ubi magnetik ahụ kwụ ọtọ na mpaghara elu nke eriri ahụ, mgbe ahụ akụkụ e guzobere n'etiti ahịrị ubi magnetik na ahịrị nkịtị bụ 0_oebe cosine dị 0_o = 1. Ọ bụrụ na ahịrị ubi magnetik ahụ dị ka akụkụ elu nke eriri ahụ, mgbe ahụ akụkụ e guzobere bụ 90^oebe cosine dị 90^o = 0. Ya mere, mmiri ndọta nwere uru kacha nta mgbe ahịrị ubi ndọta dị ka mpaghara elu nke eriri ahụ, yana uru kachasị mgbe ahịrị ubi ndọta dị ka akụkụ elu nke eriri ahụ.
A na-agbakọ oke nke emf e tinyere n'ime ọbara site na iji usoro iwu nke induction nke Faraday:

Ihe ịrịba ama na-adịghị mma na-egosi na ike electromotive nke a kpaliri na-emepụta ọkụ eletrik n'akụkụ dị iche na mmalite nke mgbanwe flux. A na-akpọ okwu a iwu Lenz.
Azịza ziri ezi bụ C.

4. EMF e tinyere n'ime eriri na-abawanye n'usoro ka oge na-aga. Ọ bụrụ na elu eriri ahụ anọgide na-agbanwe agbanwe ma oghere ndọta ahụ kwụ ọtọ n'elu eriri ahụ, mgbe ahụ eserese ubi ndọta nwere ike ịdị maka ọnọdụ a bụ….

Mkparịta ụka
A na-agbakọ oke nke emf e tinyere n'ime ọbara site na iji usoro iwu nke induction nke Faraday:

Ọ bụrụ na ọkụ eletrik ahụ dị n'akụkụ elu nke eriri ahụ, mgbe ahụ:

Ozi:

Ọ bụrụ na ebe ndọta ahụ dị n'akụkụ elu nke eriri ahụ, usoro mgbanwe ndọta ahụ bụ:

B = ebe ndọta, A = mpaghara elu nke eriri igwe ahụ.
Ebe elu nke eriri ahụ nwere uru edobere, ebe magnetik ahụ dịkwa n'akụkụ elu eriri ahụ, ya mere o nwere uru edobere.
Ya mere, dabere na usoro dị n'elu, enwere ike ikwubi na ihe na-emetụta uru nke emf a kpaliri bụ ọnụego mgbanwe nke flux, ọ bụrụ na ọnụego mgbanwe nke flux dị ukwuu mgbe ahụ emf a kpaliri na-abawanye.
Azịza ziri ezi bụ B.

Onye ntụgharị

5. Lezienụ anya n'okwu a!
1. Ọnụọgụ nke windings mbụ pere mpe karịa ọnụọgụ nke windings nke abụọ
2. Voltaji mbụ dị ukwuu karịa voltaji nke abụọ
3. Ọkụ isi dị ukwuu karịa nke abụọ
4. Ike isi dị obere karịa ike nke abụọ
Okwu ahụ nke dabara na njirimara nke transformer steepụ bụ….
A. nkwupụta 1 na 2
B. nkwupụta 1 na 3
C. nkwupụta nke 2 na nke 3
D. nkwupụta nke 2 na nke 4
Mkparịta ụka
Transformer bụ ngwaọrụ maka ịgbanwe voltaji nke alternating current (AC). E nwere ụdị transformers abụọ: transformers steepụ-up na transformers steepụ-down. Transformers steepụ-up na-eme ka voltaji dịkwuo elu, ebe transformers steepụ-down na-ebelata voltaji.
Transformer steepụ elu na-arụ ọrụ iji mee ka voltaji dịkwuo elu ka njirimara ya wee bụrụ:
1. Voltaji mbụ pere mpe, voltaji nke abụọ buru ibu
2. Ọkụ eletrik mbụ buru ibu, nke abụọ dịkwa obere
3. Ọnụọgụ nke ntụgharị mbụ pere mpe, ọnụọgụ nke ntụgharị nke abụọ dị elu karịa

Àgwà nke ọrụ transformer step down iji belata voltaji ka njirimara ndị a wee bụrụ:
1. Voltaji mbụ dị ukwuu, voltaji nke abụọ pere mpe
2. Ọkụ eletrik mbụ pere mpe, nke abụọ ọ na-agba ọkụ eletrik buru ibu karịa
2. Ọnụọgụgụ ntụgharị mbụ dị ukwuu, ọnụọgụ ntụgharị nke abụọ dị obere.

Ike eletriki bụ ike eletriki eji eme ihe n'oge ụfọdụ. A na-echekwa ike, ya mere a na-echekwa ike. Ya mere, ike eletriki dị na coil mbụ hà nhata ike eletriki dị na coil nke abụọ, otu a ka ike eletriki dịkwa.
Usoro ike eletriki:
P = VI
Nkọwa: P = ike eletriki, V = voltaji eletriki, I = ike eletriki
Ya mere, dabere na usoro a, a na-ekwubi na ọ bụrụ na voltaji eletrik buru ibu, mgbe ahụ ọkụ eletrik dị obere nke na ngwaahịa nke voltaji eletrik na ọkụ eletrik nwere uru na-adịgide adịgide.
Azịza ziri ezi bụ B.