Answer:
4 m/s
Explanation:
to find m/s, divide the meters term by the seconds term. 100m/25s = 4m/s
Answer:

Explanation:
The given data in the question is
Magnetic field : 
Turns : 
Length : 
So, number of turns per unit length :



If current is I , then magnetic field is given by

Also,

Insert the values


The current will be 
It is the red line the purple line carries the most the green line is the largest and the smallest is sky blue