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When a single ${ 50 \space \Omega }$ resistor is connected to a battery, with non-zero internal resistance, the battery emits $ 0.35\text{ A}$ of current.

When two ${ 50 \space \Omega }$ resistors are connected in series and then connected to the same battery, the current is $0.19\text{ A}$ .

What is the internal resistance of the battery?

A

$17{\space \Omega }$

B

$9.4{\space \Omega }$

C

$1.8{\space \Omega }$

D

$0.50{\space \Omega }$

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