A circular coil of radius 5 × 10-2 m and with 40 turns is carrying a current of 0.25 A. Determine the magnetic field of the circular coil at the center.

A coil of radius 44cm has 7 turns. Find the strength of the magnetic field at its centre, if 5A current flows through the coil. (𝜇𝑜=4𝜋×10−7𝑇𝑚/𝐴μ o​ =4π×10 −7 Tm/A)10×10−5𝑇10×10 −5 T5×10−7𝑇5×10 −7 T5×10−5𝑇5×10 −5 T10×10−7𝑇10×10 −7 T

A circular coil of 25 turns and radius 6.0 cm carrying a current of 10 A, is suspended vertically in a uniform magnetic field of magnitude 1.2 T. The field lines run horizontally in the plane of the coil. Calculate the force and torque on coil due to the magnetic field

The figure shows a wire with a loop in it. The current through the wire is 5.00 A and the diameter of the loop is 3.40 cm. What is the magnetic field at the center of the loop?

A rectangular coil of 100 turns and area 500 x 10-4 m2 carrying 2 A current is placed in auniform magnetic field of 10T. Find the maximum torque applying on the coil

A coil of wire is mounted between two magnets. When there is a current in the coil,it rotates.The diagram shows the position of the coil, viewed from one end, when it is at an angleof 20° to the horizontal. The current is into the page at X and out of the page at Y.There are 10 turns on the coil and the current in the coil is 6.9 A.Determine the resultant moment about P of the magnetic forces acting on the coil.length of coil = 5.0 cmwidth of coil = 3.5 cmcurrent = 6.9 Anumber of turns = 10magnetic flux density = 0.07 T(4)...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Moment about P = ......................................................(Total for Question 11 = 4 marks)