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The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although...

The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V emf, whereas an alkaline cell has a 1.58-V emf. The radio has a 3.94 Ω resistance. How much more power is delivered to the radio by alkaline cell, which has an internal resistance of 0.200Ω than by an nicad cell, having an internal resistance of 0.040Ω?

Science   Advanced-Physics   
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