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A 1.5 V battery with an internal resistance of 5 Ohms is connected to a light...

A 1.5 V battery with an internal resistance of 5 Ohms is connected to a light bulb with a resistance of 20 Ohms in a simple, single-loop circuit.  

a) What is the current flowing in this circuit?

b) What is the voltage difference across the light bulb and the internal resistor?

c) Also calc the supplied power by the battery and power drops across the two resistors.

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