Can anyone help me solve this questions from the circuit attached I am still a beginner...

Showing all working find:
a)What is the reading of the voltmeter when the load resistor RL is removed ?

b)Determine the readings of the voltmeter when the load resistor RL is set to each of the following values 100ohms and 10,000 ohms

c)With respect to part(b),which value of RL makes the voltage source appear stiff ?
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please someone help me solve this question 10x alot

 

Hello,

This looks like a schoolwork question.
Take a look at the series circuits in the DC volume of the AAC eBook.
http://www.allaboutcircuits.com/vol_1/chpt_5/2.html
Give it a try and come back if you have some problems.

Greetings,
Bertus

 

Hi !!

yes it's a school question I worked almost 20 questions related to it but I can't solve this I think that I can't work this question bacause of the circuit diagram it looks quite complicated for abeginner like me thats why I am asking in this forum

 

hello beemovie,
a) when load resistor is removed it becomes an open circuit and hence no current flows through the 10ohm resistor and hence no drop across it.The entire drop is across the open circuit and the voltmeter reads 20v approximately.
b)for this use voltage division rule.see the link bertus has provided.
c)a souce is said to be stiff when it satisfies the following condition

source resistance <(.01* R load)

 

thanks a lot my friend I really appreciated your help