Real Estate Searc Top Hat How to Find geometric tc a How to Find Absolute Con te

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Real Estate Searc Top Hat How to Find geometric tc a How to Find Absolute Con ted MasteringPhysics: Chapter 19 DC Circuits: Resistors and Capacitors in Series and Parallel, Kirchoff's Rules, and RC Circuits https://session.masteringphysics.com/myct/itemView?assignmentProblemiD 91766639 ?Chapter 19-DC Circuits: Resistors and Capacitors in Series and Parallel. Kirchoffs Rules, and RC Circuits Problem 19.2 1 of 14 ? Part A Four 1.5-V cells are connected in series to a 14 -2 lightbulb. If the resulting current is 0.25 A, what is the internal resistance of each cell, assuming they are dentical and neglecting the wires? Express your answer using two significant figures Submit Next > Provide Feedback

Explanation / Answer

here,

EMF = 1.5 V

R = 14 ohm

let the internal resistance of each cell be r

I = ( 4 * EMF )/( 4 r + R)

0.25 * ( 4 * r + 14) = 4 * 1.5

solving for r

r = 2.5 ohm

the internal resistance of each cell is 2.5 ohm

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