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Dhumucda fiilada

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Waxaan sharxi karaa sida batterigu u riixo xoogga korontada iyadoo loo marayo fiilooyin dhumuc kala duwan leh.

Hordhac

Casharkayagu wuxuu ku saabsan yahay dhumucda siliga (wire) oo ka tirsan cutubka iska caabbinta (resistance) iyo wareegyada barbar socda (parallel circuits). Waa inaad hore u garanaysaa sida batarigu u riixo koronto (current) wareegga dhexdiisa iyo waxa atom-ku yahay.

Muuji qoraalka
The thicker a wire, the smaller its resistance. The greater the cross–sectional area of a wire, the smaller its resistance. Electric current in a wire is a flow of electrons moving between ‘atoms’ (metal ions). Doubling the cross-sectional area of a wire halves its resistance. Doubling the cross-sectional area of a wire doubles the number of electrons that can flow through the wire.

Warqadda shaqada

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Imtixaannada

  1. 1. Laba ka mid ah weedhahan soo socda ee ku saabsan korontada (electricity) waa kuwa sax ah?

    • Jawaabta saxda ah:Biraha (metals) waa kuwo si fiican u gudbiya korontada (conductors).
    • Bakhtiyaaggu (plastics) waa kuwo si fiican u gudbiya korontada.
    • Biraha waa kuwo si fiican u celiya korontada (insulators).
    • Bakhtiyaaggu waa kuwo si fiican u celiya korontada.

  2. 2. Tijaabo caddaalad ah, doorsoomayaasha (variables) loo baahan yahay inay isku mid ahaadaan waxaa loo yaqaan ...

    • doorsoomaha madaxa banaan (independent variable).
    • doorsoomaha ku xiran (dependent variable).
    • Jawaabta saxda ah:doorsoomayaasha xakamaynta (control variables).

  3. 3. Maxaa dhacaya haddii batari kale lagu daro (si sax ah oo isku xigxiga) wareegga (circuit) lagu muujiyey?

    • Dareemka (current) wuu yaraanayaa.
    • Korantada (voltage) isku mid bay ahaanaysaa.
    • Iska caabbinta (resistance) way kordhinaysaa.
    • Jawaabta saxda ah:Tirada xambaarayaasha korontada (charge carriers) ee fiilooyinka isku mid bay ahaanaysaa.

  4. 4. Maxaa dhacaya haddii laba batari oo isku mid ah lagu xiro si taxane ah (series) laam (lamp), laakiin loo jeediyo jihooyin iska soo horjeeda?

    • Jawaabta saxda ah:Laambaddu ma iftiimayso.
    • Laambaddu waxay noqon doontaa mid ka iftiin badan.
    • Laambaddu waxay la mid noqon doontaa iftiinkii ay lahayd markii hal batari la isticmaalayay.
    • Laambaddu waxay ku dhex iftiimi doontaa iyadoo shidan iyo bakhti ah.

  5. 5. Resistor-yadaan soo socda midkee ayaa ugu hor istaagi doona socodka korontada (current)?

    • Resistor 5 ohm
    • Resistor 10 ohm
    • Resistor 15 ohm
    • Jawaabta saxda ah:Resistor 20 ohm

  6. 6. Maxaa dhacaya haddii resistor-ka ku jira wareegga taxanaha ah (series circuit) loo dhaqaajiyo meel u dhow baytari (battery)?

    • Wuxuu sii caabbi doonaa socodka korontada (current) si ka badan.
    • Wuxuu sii caabbi doonaa socodka korontada si ka yar.
    • Inta uu resistor-ku u dhow yahay baytariga, ayay sarraysaa iska caabbintiisa (resistance).
    • Jawaabta saxda ah:Ma jiri doonto saameyn ku timaadda iska caabbintiisa.

  1. 1. Labayda qodob ee soo socda ayaa sharxaya waxa ku dhaca atom-ka birta (metal atom) marka uu lumiyo elektaroon (electron)?

    • Wuxuu noqdaa mid ku dallaca si taban (negatively charged).
    • Jawaabta saxda ah:Wuxuu noqdaa mid ku dallaca si togan (positively charged).
    • Wuxuu sii ahaanayaa mid dhexdhexaad ah (neutral).
    • Wuxuu noqdaa ion.

  2. 2. Waa kee labada bir ee ka mid ah kuwan soo socda ee ugu fiican korontada (electricity) gudbinta?

    • Jawaabta saxda ah:naxaasta (copper)
    • birta (steel)
    • nichrome
    • qalinka (silver)
    • constantan

  3. 3. Doorashada soo socota kee baa sharxaysa sababta silig bir ah oo dhuuban uu u leeyahay iska caabin (resistance) ka sareeya kan dhumucdiisu weyn tahay, mitirkiiba?

    • Jawaabta saxda ah:Wuxuu leeyahay elektaroonno (electrons) ka yar, mitirkiiba, si ay u qaadaan koronto.
    • Way ku adag tahay elektaroonnada inay isku mariyaan meesha cidhiidhiga ah.
    • Wuxuu leeyahay bedka isgoysyada (cross-sectional area) oo ka weyn.
    • Dhuuban ka dhigistu waxay keentaa in elektaroonnadu ku dhowaadaan atomiyada.

  4. 4. Sawirka la muujiyay wuxuu ka turjumayaa habka ay u kala horreeyaan walxaha (particles) ee birta dhexdeeda. Kee ka mid ah walxahan soo socda ayaa ay ka dhigan yihiin goobooyinka yaryar ee buluuga ah?

    • borotoonno (protons)
    • naytroonno (neutrons)
    • Jawaabta saxda ah:elektaroonno (electrons)
    • atomo (atoms)

  5. 5. Kee ka mid ah weedhahan soo socda ayaa sharxaya sababta moodelladu (models) ugu faa'iidayaan marka la sharxayo korontada (electricity)?

    • Jawaabta saxda ah:Waxay fududeeyaan fikradaha adag.
    • Waxay la mid yihiin shayga dhabta ah si sax ah.
    • Waxay adeegsadaan tusaalayaal aan la qabno si ay nooga caawiyaan fahamka fikradaha aan la taaban karin.
    • Waxay noo caawiyaan inaan aragno waxyaabaha aan si toos ah u arki karin.

  6. 6. Mid ka mid ah weedhahan soo socda ayaa sharxaya waxa ku dhacaya iska caabinta (resistance) iyo korantada (current) ay waddo silig haddii bedka isgoyskiisa (cross-sectional area) la kordhiyo?

    • Iska caabintiisu way kordheysaa marka korantada ay waddo sidoo kale way kordheysaa.
    • Iska caabintiisu way kordheysaa marka korantada ay waddo way yaraanaysaa.
    • Jawaabta saxda ah:Iska caabintiisu way yaraanaysaa marka korantada ay waddo way kordheysaa.
    • Iska caabintiisu way yaraanaysaa marka korantada ay waddo sidoo kale way yaraanaysaa.

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