15.0cm 15.0cm 15.0cm 15.0cm

b. A 10 cm long solenoid with a radius 1cm has 500 turns. The current in the solenoid is changing at 0.5A per second. Find the following

An experimentalist fires a beam of electrons, creating a visible path in the air that can be measured. The beam is fired along a direction parallel to a current-carrying wire, and the electrons travel in a circular path in response to the wire’s magnetic field. Assuming the mass and charge of the electrons is known, what quantities would you need to measure in order to deduce the current in the wire?  a. the radius of the circular path b. the average distance between the electrons and the wire  c. the velocity of the electrons d. two of the above e. all of the above

The wires that form the semicircles shown in the figure have radii a and b. Determine the magnitude, direction, and direction of the resultant field produced by the wire currents at point P.

Consider two very long cylindrical wires (see image) of radius R, with current moving in the same direction. The centers of the wires are a distance 4R apart. Both wires have a uniform current density Jo. In the image, the line connecting the centers of the wires is an imaginary line to help visualize distances. a. What is the magnetic field at point (a), midway between the wires? b. What is the magnetic field at point (b) which is a point R/3 from the center of the left wire along the line connecting the two wire centers? c. What is the magnetic field at point (c), the center of the left wire? Side view current flows right Cross - Section View current into page -42

Refer to the figure below. A rectangular current loop, with dimensions a=5cm and b=4cm, is pivoted around the z-axis with an angle Φ=30o  to the y-axis. The current I=2mA is directed by the red arrows as shown. Assume a magnetic field as shown in the figure, determine the torque. a.) 3.46(az) μNmb.) 2(az) μNmc.) 3.46(-az) μNmd.) 2(-az) μNme.) None of the above

A rectangular semi- conductor of length 50 mm, width 30 mm and depth 20 mm in the same uniform magnetic field of 12500 Oersteds. It was observed that 12500 Oersteds produces Hall voltage of 0.5 milli Volts. Find the number density of charge carriers. a. 9.72 x 1024 /m³ b. 3.9 x 1024 /m³ 9.72 x 1028 / m³ d. 3.9 x 1028 /m³ C. e. None of the above

Consider a circular wire of radius a that carries a current I directed as shown below. Calculate the magnitude of the magnetic field at point P due to the circular wire. We assume that Point P lies on the axis of the circular wire.

Four long, parallel conductors carry equal currents of I. The figure is an end view of the conductors. The current direction is into the page at points A and Band out of the page at points C and D. Calculate the magnitude and the direction of the magnetic force per unit length at point C, located at the cornet of the square of edge length L. Select one: O a. Hol B. ID (3i-5) 4x L O b. 4o1 (25) (3i-25) O d. Hol(-i+3) (-i+3j) 4L O e. Hol 2nL Nert page

DO THE FOLLOWING COMPLETELY AND GET AN UPVOTE.