91. With the unit Ω understood, the equivalent resistance for this circuit is R eq = 20 R + 100 R +10 . Therefore, the power supplied by the battery (equal to the power dissipated in the resistors) is P = V 2 R = V 2 R +10 20 R + 100 where V = 12 V. We attempt to extremize the expression by working through the dP/dR = 0 condition
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.