This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.

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Hapa kuna maelezo unayohitaji kwa mjomba wako:
ITEM 3
Step 1: Eleza jinsi swichi ya relay inavyofanya kazi. Swichi ya relay ni swichi ya kielektroniki inayotumia sumaku-umeme. Inapopita mkondo wa umeme kwenye koili yake, huunda uga wa sumaku unaovuta nanga (armature), na hivyo kufunga au kufungua anwani (contacts) ili kudhibiti mzunguko mwingine wa umeme.
Step 2: Kokotoa mkondo wa umeme unaopita kwenye koili ya relay. Tutatumia Sheria ya Ohm, , ambapo ni volti, ni mkondo wa umeme, na ni ukinzani. Tunapewa: Volti () = Ukinzani () = Mkondo wa umeme () = ?
Step 3: Linganisha mkondo wa umeme uliokokotolewa na mkondo wa kizingiti na utoe hitimisho. Mkondo wa umeme unaopita kwenye koili ni . Mkondo wa kizingiti kwa relay kuwasha ni .
Kwa kuwa , mkondo wa umeme unaopita kwenye koili ya relay ni mkubwa kuliko mkondo wa kizingiti. Hii inamaanisha kuwa relay itawasha.
Hitimisho: Chini ya masharti haya, relay itawasha, na kwa hivyo mashine ya kusaga itawasha.
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Hapa kuna maelezo unayohitaji kwa mjomba wako: ITEM 3 Step 1: Eleza jinsi swichi ya relay inavyofanya kazi.
This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.