In an experiment to verify Ohm’s law, the following readings were taken for a constant-temperature nichrome coil:
V (V): 2.0, 3.0, 4.0
I (A): 0.25, 0.38, 0.50
Use these values to answer the questions below.
(a) Determine the resistance of the coil for each reading.
(b) Find the average resistance of the coil.
(c) State whether the coil obeys Ohm’s law over the given range. Give a brief numerical justification.