Question 4 A coil of wire of 10 turns has across sectional area of 0.08 m2

. What is the total magnetic flux through

the coil if a magnetic field of 0.4T passes through the coil;

(a) perpendicular to the plane of the coil.

(b) at 20oto the plane of the coil

(c) by what percentage has the answer in (b) differed from the one in (a)?

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?