Remind me to stop arguing with woo-woos.

[MrBogosity]

Ohm's Law doesn't cover the use of power to do work; it only covers the relationship between potential, current, and resistance.

[Travis Retriever]

Ohm's Law doesn't cover the use of power to do work; it only covers the relationship between potential, current, and resistance.

Eh? OK, then this:
P = i*V
P = V^2/R
P = i^2*R

In terms of this then.

I suspect the internal resistance of the batteries and the resistance of the radio might have something to do with the difference it.

[MrBogosity]

Actually, you want to use P = W/t. The equations you posted are only valid if the component is a resistor. What you want is to use the formulas for motive power. In the case of a motor, it's driven by inductors.

[Travis Retriever]

Actually, you want to use P = W/t. The equations you posted are only valid if the component is a resistor. What you want is to use the formulas for motive power. In the case of a motor, it's driven by inductors.

So THAT's why the motor behaves differently.