Question: A (60-mathrm{W}) light bulb has resistance (R=10.00 Omega) when connected to a battery with (mathrm{emf} mathscr{E}=120.0 mathrm{~V}). What is the internal resistance (R_{text {batr }})

A $60-\mathrm{W}$ light bulb has resistance $R=10.00 \Omega$ when connected to a battery with $\mathrm{emf} \mathscr{E}=120.0 \mathrm{~V}$. What is the internal resistance $R_{\text {batr }}$ of the battery?

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