A person measures 9volts accross the battery, 3 volts accross the resistor Ra and 4.5volts accross the resistor Rb connected in series (all three battery, Ra, Rb are connected in series) with a voltmeter of finite resistance. The resistor Ra=2M, and the battery has negligible internal resistance. Find- 1.The resistor Rb and 2. The internal resistance of the voltmeter.
Homework Equations- Ohm's law and Kirchoff's laws are only possible relevant equations.
The Attempt at a Solution- I really didnot get this. Shouldnt the voltages at the two resistors add up to give battery voltage?
[source of the question- tifr gs 2010]