Question

An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter,four cells of 1.5 V each and a plug key was set up.
i. Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points X and Y the electric current flowing through XY.

Answer 1

Answer:

at potential diff 0.8V, V/I = 0.8/0.3 = 8/3

at potential diff 1.2V, V/I = 1.2/0.45 = 8/3

at potential diff 1.6V, V/I = 1.6/0.6 = 8/3

This shows that the ratio V/I is constant and ohm's law is obeyed

(iii) the resistance is 8/3 Ω

Explanation:

hope it helps