What is the value of the magnetic flux through the coil due to the wire with a current I passing through it

Magnetic flux is zero

Explanation:

We know that

magnetic flux (B) =

magnetic field x area x cosစ

And စ being the angle between magnetic field and area vector

So we are given စ= 90°

So

B = magnetic field x area x cos(90)

B= 0

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards