A Battery Has an Emf ε = 12 V and an Internal

question 193

Multiple Choice

A battery has an emf ε = 12 V and an internal resistance r = 2.0 Ω,as shown in the figure.When a 3.0-Ω cable is connected across the battery terminals a and b,the rate at which chemical energy in the battery is depleted is closest to

• A)24 W.
• B)27 W.
• C)29 W.
• D)32 W.
• E)34 W.

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