Physics

Problem

Two wires

X

and

Y

made of the same material and of equal length were tested. The following readings were obtained:

$V$ (V)	$I$ in $X$ (A)	$I$ in $Y$ (A)
1	0.05	0.025
2	0.10	0.050
3	0.15	0.075
4	0.20	0.100

Use the data to answer the questions that follow. a. (i) Draw separate

V

–

I

graphs for wires

X

and

Y

on the same axes. From the graphs or otherwise, determine the resistance of each wire. b. (ii) Which wire has the larger cross-sectional area? Justify your answer. c. (iii) The two wires are connected in series to a

12\,\text{V}

source. Calculate the current flowing in the circuit.

Browse the problem library