The circuit in the diagram consists of a battery with EMF E , a resistor with re

Question

The circuit in the diagram consists of a battery with EMF E, a resistor with resistance R, an ammeter, and a voltmeter. The voltmeter and the ammeter (labeled V and A, respectively) can be considered ideal; that is, their resistances are infinity and zero, respectively. The current in the resistor is I, and the voltage across it is V. The internal resistance of the batter r(int) is not zero.

Part A - What is the ammeter reading I?

Part B - What is the voltmeter reading V?

Part C - What is the power Prc dissipated in the water?

What is the ammeter reading I?

Explanation / Answer

a)I =E/(r+R)

b) V=I*R = E*R/(r+R)

c) Pc =VI =E^2*R/(r+R)^2

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