Question

15. V-I graphs for two materials A and B are shown
below. Which of the two materials follows Ohm's
law, and why?
A
V​

Answer 1

Answer:

Ohm's law is: The current flowing through a conductor is directly proportional to the voltage applied across the conductor

means I∝V or I=

R

V

.....eq.( 1 )

from equation 1 we can see , the slope of I−V graph is 1/R which is a constant.