Two concentric, coplanar, circular loops of wire of different diameter carry currents in the same direction. Describe the nature of the force exerted on the inner loop by the outer loop and on the outer loop by the inner loop.

Two long, straight wires are parallel and 15 cm apart. One carries a current of 2.8 A, the other a current of 5.6 A. (a) If the two currents flow in opposite directions, what is the magnitude (in N/m) and direction of the force per unit length of one wire on the other? magnitude N/m direction ---Select--- (b) What is the magnitude (in N/m) and direction of the force per unit length if the currents flow in the same direction? magnitude N/m direction ---Select---

A metallic weight is suspended from a metal spring. What would happen if now a current is passed through the spring? The spring will extend, lowering the weight. The weight will not move. The spring will contract, raising the weight. Whether or not the weight moves up or down depends on what the weight is made of (i.e. whether or not it is magnetizable).

Magnetic resonance imaging (MRI) scans are often prohibited for patients with an implanted device, such as a pacemaker. There are multiple reasons for this prohibition. One reason is the physical torque on the device due to the MRI's magnetic field. Suppose a patient’s pacemaker implant requires I=2.7 mA of current to function. The leads of the device travel close together until they reach the heart and then split off to touch the top and bottom of the heart, such that size of the current loop is approximately half the cross-sectional area of the heart. Suppose the MRI machine uses a magnetic field of B=2.0 T. Treating the heart as a box that is L=13.0 cm long and W=8.0 cm wide, calculate the magnitude of the maximum torque τ on the current loop.

Two long parallel wires that are 0.30 m apart carry currents of 5.0 A and 8.0 A in the opposite direction. Find the magnitude of the force per unit length that each wire exerts on the other wire and indicate if the force is attractive or repulsive. (μ0 = 4π × 10-7 T ∙ m/A) A) 2.7 × 10-5 N repulsive B) 7.2 × 10-5 N repulsive C) 3.4 × 10-5 N attractive D) 2.7 × 10-5 N attractive E) 7.2 × 10-5 N attractive

An electron with a kinetic energy of 1.04 x 104 eV is initially moving south in a uniform magnetic field of magnitude 488 G, directed east. Describe in detail the electron's trajectory, including its shape and orientation. the radius of the path   direction of initial force        shape of trajectory

Two long, parallel wires are separated by a distance of 0.400 m (see (Figure 1)). The currents I₁ and I2 have the directions shown. Figure 1₁ = 5.00 A ↑ 0.400 m 1₂ = 2.00 A 1 of 1 Part A Calculate the magnitude of the force exerted by each wire on a 1.20 m length of the other. Express your answer with the appropriate units. F = Submit Part B Part C F = Submit HA Value Request Answer Each current is doubled, so that I₁ becomes 10.0 A and I2 becomes 4.00 A. Now what is the magnitude of the force that each wire exerts on a 1.20 m length of the other? Express your answer with the appropriate units. Provide Feedback UA Value Units Request Answer ? Units ?

Two high-current transmission lines carry currents of 19 A and 85 A in the same direction and are suspended parallel to each other 48 cm apart. If the vertical posts supporting these wires divide the lines into straight 15 m segments, what magnetic force does each segment exert on the other? __________N. Exponential format with 2 SF.

A proton is initially moving west at a speed of 1.01  106 m/s in a uniform magnetic field of magnitude 0.299 T directed vertically upward. Describe in detail the proton's trajectory, including its shape and orientation. the radius of the path   the proton's trajectory

6. Three long, straight wires are mounted on the vertices of an equilateral triangle as shown in the figure. The wires carry currents of I1 = 2.00 A, I2 = 5.000 A, and I3 = 4.50 A. Each side of the triangle has a length of 42.0 cm, and the point (C) is located half way between (I1) and (I3) along one of the sides. Find the magnitude of the magnetic field at point (C). oof19 oof19 oon oof19 oof19 oofl 18 of19 0of19 o0f19 oof19 oof19 19 0of19 o0f