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List two requirements of a conductor material to be used in resistance measurement.
Physics
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Haya Engineer, twende na swali linalofuata.
i) Hizi hapa mahitaji mawili ya nyenzo ya kondakta inayotumika katika kipimo cha upinzani:
- Inapaswa kuwa na mgawo mdogo wa halijoto wa upinzani (low temperature coefficient of resistance) ili upinzani wake usibadilike sana na mabadiliko ya halijoto.
- Inapaswa kuwa na upinzani mkubwa (high resistivity) ili kuwezesha kutengeneza vipinga vyenye thamani kubwa katika ukubwa mdogo.
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