Refer to the image below and also give explanation for your answer...?
1 Answer
Jan 4, 2017
Option A
Explanation:
In diagram 1.
Given
Using Ohm's Law we get the resistance
#R=V/I#
#=>R=3.0/0.5=6Omega#
In diagram 2.
The voltage remains same and there is no change in the position of voltmeter. As such
An identical resistor is added in parallel with the first resistor. The combined resistance
#1/R_"total"=1/R_1+1/R_2#
#=>1/R_c=1/6+1/6#
#=>1/R_c=1/3#
#=>R_c=3Omega#
New current is found using Ohm's Law
#I=V/R#
#=>I=3.0/3#
#=>I=1A#