Exercise 3 In an equation y mx+c; y and x have dimensions of length and c is constant. What are the dimensions of m' A. Mass
B. Length
C. Time
D. m is Dimensionless

D. m is Dimensionless

Explanation:

The equation of a straight line is given as:

        y  = mx + c

Dimension of y = l

                       x = l

                       c has no dimension

 So;

if we do a dimensional analysis:

            L  = m L + 0

              m  = 1

So, m has no dimension

the amount of current in the coil