A current-carrying rectangular wire loop with width a 0.115 m and length b = 0.220 m is in the xy-plane, supported by a nonconducting, frictionless axle of negligible weight. A current of I = 4.00 A travels counterclockwise in the circuit (see the figure below). Calculate the magnitude and direction of the force exerted on the left, right, top, and bottom segments of wire (in N) by a uniform magnetic field of 0.350 T that points in the positive x-direction. Find the magnitude of the net torque (in N. m) on the loop about the axle. axle axle HINT (a) left segment of the wire magnitude N direction ---Select- (b) right segment of the wire magnitude direction ---Select--- (c) top segment magnitude direction ---Select--- (d) bottom segment magnitude N direction ---Select--- (e) Find the magnitude of the net torque on the loop about the axle. N. m

Question 1: A) Dinesh studying rail guns has been suggested for launching projectiles into space without chemical rockets. A tabletop model rail gun (Figure 1.) consists of two long, parallel, horizontal rails, l= 6.80 cm apart, bridged by a bar of mass m= 8.00 g that is free to slide without friction. The rails and bar have low electric resistance, and the current is limited to a constant I = 42.0 A by a power supply that is far to the left of the figure, so it has no magnetic effect on the bar. Figure 1 shows the bar at rest at the midpoint of the rails at the moment the current is established. He wishes to find the speed with which the bar leaves the rails after being released from the midpoint of the rails (Hint: you need to draw the figure). (Mo = 4π × 10-¹T.) Jg x V₁ = = 0 m d Figure 1. (i) Find the magnitude of the magnetic field at a distance of 1.85 cm from a single long wire carrying a current of 2.40 A. (ii) For purposes of evaluating the magnetic field, model the rails as…

Two meter-long parallel wires each have a linear mass density of 30 g/m and carry the same current of 0.50 mA. The are hung from the same support bar by strings of length .080 m so that the wires run parallel to the ground. The current causes the wires to repel from each other, so they hang with an angle θ = 20◦ between the supporting strings of the two wires. Are the currents in the same or opposite directions? What is the magnitude of the current?

A current I = 3 A is passed through a wire. A second wire of length L = 1 m is moving with velocity v= 285.4 m s¨¹ at a distance d=1 cm perpendicular to the magnetic field generated by the first wire (see sketch below). Calculate the current in the circuit that includes the second wire and a stationary piece of wire (green in the sketch below). Take the resistance in the circuit to be 10 Q2 (Ohm). Consider the magnetic field B to be constant over the range of motion of the second wire (i.e. d » 1 ). For the permeability of vacuum take μo = 1.3×10-6 NA². Provide your answer in milliamperes (mA). Enter your answer in the box below. Wire 1 Wire 2 اد Wire loop

Subject :- Physics

The above picture depicts a moveable vertical conducting bar sliding on fixed conducting rails. v → = 2.3 m/s and B → is 0.65 T and out of the page. What is the current in the system? Group of answer choices 0.30 A 1.5 A 0.012 A 0 A 7.5 A

A current-carrying rectangular wire loop with width a = 0.115 m and length b = 0.220 m is in the xy-plane, supported by a nonconducting, frictionless axle of negligible weight. A current of I = 3.50 A travels counterclockwise in the circuit (see the figure below). Calculate the magnitude and direction of the force exerted on the left, right, top, and bottom segments of wire (in N) by a uniform magnetic field of 0.400 T that points in the positive x-direction. Find the magnitude of the net torque (in N · m) on the loop about the axis. (a) left segment of the wire magnitude N direction (b) right segment of the wire magnitude N direction (c) top segment magnitude N direction (d) bottom segment magnitude N direction (e) Find the magnitude of the net torque on the loop about the axle. N · m