A small, square loop carries a 27 A current. The on-axis magnetic field strength 46 cm from the loop is 6.7 nT. Part A What is the edge length of the square? Express your answer to two significant figures and include the appropriate units. L = μα Value Submit Request Answer Units ?

A wire with a length of 3.6 m and a mass of 0.68 kg is in a region of space with a magnetic field of 0.82 T. Part A What is the minimum current needed to levitate the wire? Express your answer using two significant figures. VE ΑΣΦ I = Submit Request Answer ? A

The magnetic field inside an air-filled solenoid 38 cm long and 2.3 cm in diameter is 0.60 T. Part A Approximately how much energy is stored in this field? Express your answer to two significant figures and include the appropriate units. E = μA Value Units ?

Consider the current-carrying wire shown in the figure. The current creates a magnetic field at the point P, which is the center of the arc segment of the wire. If 0 = 30.0°, the radius of the arc is 0.800 m, and the current is 5.00 A, what are the magnitude (in nT) and direction of the field produced at P? magnitude direction into the screen nT i

Constants A circular coil 15.0 cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.00 x 10-5 T and points into the Earth at an angle of 53.0 ° below a line pointing due north. A 6.90-A clockwise current passes through the coil. Part A Determine the torque on the coil. Express your answer using three significant figures and Include the appropriate units. HA 132 N•m Submit Previous Answers Request Answer X Incorrect; Try Again

Te―a What is the magnitude of the magnetic field at point P shown below if a=3.10mm, b = 6.91mm, and the current 1=7,822A? Assume 3 significant digits and units of Tesla. Choose out of the page as positive.

To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 8.9 cm in diameter and 45 cm in length. You would like a 3.2 AA current to produce a 2.6 kGkG magnetic field inside your solenoid. Part A What is the total length of wire you will need to meet these specifications? Express your answer using two significant figures.

1. What is the magnetic field at P due to the current I in the wire shown? b. Write your answer in terms of 'µo', 'l', 'a', and 'b'. Remember to put a multiplication sign between variables. B=

A 0.56 m copper rod with a mass of 5.00x10-2 kg carries a current of 10 A in the positive x direction. Let upward be the positive y direction. Part A What is the magnitude of the minimum magnetic field needed to levitate the rod? Express your answer using two significant figures. Hνα ΑΣφ B = T

A long, cylindrical conductor of radius  has two cylindrical cavities each of diameter  through its entire length. A current  is directed out of the page and is uniform through a cross section of the conducting material. Find the magnitude and direction of the magnetic field in terms of  and  at .point  P1 .point P2