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Solve for the Specified Variable
- I=ER+rI=\frac{E}{R+r} For rr A) r=E−IRIr=\frac{E-I R}{I} B) r=IREr=\frac{I R}{E}

Question 239

Multiple Choice

Solve for the specified variable
- I=ER+rI=\frac{E}{R+r} for rr


A) r=E−IRIr=\frac{E-I R}{I}

B) r=IREr=\frac{I R}{E}

C) r=E−RIr=\frac{E-R}{I}

D) r=EI−IRr=\frac{E}{I}-I R

Correct Answer:

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