A student notes these readings for a conductor: Voltage (V): 2, 4, 6 Current
PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
A student notes these readings for a conductor:
Voltage (V): 2, 4, 6
Current (A): 1.0, 2.0, 3.1
When the points are plotted on a V–I graph they do not lie on one straight line. What does this indicate about the conductor?
(a) It is ohmic; the slight scatter is due only to experimental error
(b) It is non-ohmic because its resistance increases as the current increases
(c) It is non-ohmic because its resistance decreases as the current increases
(d) No definite conclusion about the resistance can be drawn from the plotted points