The diagram below represents a single loop in a DC electric motor. Using the appropriate left-hand rule, what is the direction of the magnetic force on the loop? * S X) N

Two infinitely long, straight wires are parallel and separated by a distance of one meter. They carry currents in the same direction. Wire 1 carries 4 times the current as wire 2 does. Determine the perpendicular distance from wire 1 to a point where the net magnetic field is zero between the two wires. 11 12 (out of screen) (out of screen) Number i Units

The figure below shows a long straight wire near a rectangular current loop. (Assume I, = 14.0 A and r = 6.50 cm.) I, 10.0 cm 1, = 30.0 A 30.0 cm What is the magnitude in newtons and direction of the total force on the loop? magnitude N direction ---Select--- ---Select--- toward the wire away from the wire to the left to the right into the page out of the page ---Select--- an

Write a word problem with the picture below. You can pick your own numbers and find the radius or the distance of the helical coil or the electric force or magnetic force.

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At a certain location, the horizontal component of the earth's magnetic field is 2.1 × 10-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton. Number i Units

Please solve the question correctly and also be sure to give the correct units. Thank you!

What is the magnitude of the current in the coil and is it to the left or to the right?

You have learned that a charge moving in an magnetic field can experience a magnetic force. Remarkably, anytime that a charged particle moves that particle produces its own magnetic field! The image below of magnetic compasses forming a circle around a current-carrying wire demonstrates the shape of the magnetic field. The magnetic field lines forms concentric circles around that wire. The strength of the field decreases with increasing distance away from the wire. DOCES PAMIE DOCERE B If the current in the wire is 7.79A, what is the magnitude of the magnitude of the magnetic field (in μT, or micro-Tesla) a distance of 0.32m away from the wire? Note: It is understood that the unit of your answer is in μT, however do not explicitly include units in your answer. Enter only a number. If you do enter a unit, your answer will be counted wrong.

a) The figure shows the motion of a positive particle moving in a magnetic field, similar to what was observed in our lab. The force on the particle and its velocity are indicated in the figure. What is the direction of the magnetic field? F b) In what direction should you move the magnet so as to induce the counterclockwise current shown? Draw an arrow indicating this direction. counterclockwise induced current v =? N S