Question
Fri May 25, 2012 By: Namami Gaur
 

A battery of emf 10V and internal 3 ohm is connected to a resistor.If the current in the circuit is 0.5A,what is the resistance of the resistor?What is the terminal voltage of the battery when the circuit is closed.

Expert Reply
Fri May 25, 2012
emf of battery=10v
r, internal rssitance of battery=3 ohmscurrent in th circuit,I=0.5A
Resistanc of the rsistor=R
Ohm's law
I=E/(R+r)
So, R=17 ohms
Terminal voltage of the reesistor=V
Ohm's law states that
V=IxR
So, V= 8.5V
Home Work Help