When a lowercase 𝑟′ is used in relation to a transistor, it refers to(a) A low resistance(b) A wire resistance(c) An internal ac resistance(d) A source resistance
Question
When a lowercase 𝑟′ is used in relation to a transistor, it refers to(a) A low resistance(b) A wire resistance(c) An internal ac resistance(d) A source resistance
Solution
When a lowercase 𝑟′ is used in relation to a transistor, it refers to (c) An internal ac resistance. This is often used in small signal models of transistors, where 𝑟′ represents the small-signal resistance looking into the emitter of a transistor.
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