tsl156 - Electric current E-Ir-IR = 0 ⇒ I = E R r •...

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Impedance Matching A battery providing an emf E with internal resistance r is connected to an external resistor of resistance R as shown. For what value of R does the battery deliver the maximum power to the external resistor?
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Unformatted text preview: Electric current: E -Ir-IR = 0 ⇒ I = E R + r • Power delivered to external resistor: P = I 2 R = E 2 R ( R + r ) 2 • Condition for maximum power: dP dR = 0 ⇒ R = r R ε r I tsl156 – p.1/1...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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