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- B2please helpA circular loop of wire has radius R = 0.0314m and carries a clockwise current of 8.00A. Whare are the magnitude and direction of the magnetic field of the coil at its center (point P in the sketch). I know the answer is 1.60 * 10^-4 T into page I don't understand how you know the answer is into page and not out of page.
- Which of the following modifications to an electromagnet would be most likely to decrease the strength of its magnetic field? a) reducing the number of coils and inserting an iron core b) removing its iron rod core and increasing the number of coils c) increasing the current and reducing the number of coils d) decreasing the current and reducing the number of coilsCurrent Attempt in Progress A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.30 m. The normal to the plane of the loop is parallel to a constant magnetic field (p = 0) of magnitude 0.77 T. What is the change AO in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution? B (into paper) ayt ΔΦ = iWrite 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.
- The copper sheet shown below is partially in a magnetic field. What happens when it is pulled to the right (select all that apply)? O The copper sheet feels an opposing force to the left Copper is a nonmagnetic material, so it is unaffected by the magnetic field The copper sheet feels a net torque in the direction parallel to its direction of motion A clockwise electric current flows in the copper sheeta) 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 SA positively-charged point particle, q, with a speed of v = 3.0 x 105 m/s enters a uniform magnetic field, , at a 300 angle to the field as shown in the diagram below. Which of the following paths best describes the trajectory of the particle? a. A circle b. A helix c. An ellipse d. A hyperbola e. A parabola