1.
The emf induced in a straight conductor of length l moving with velocity v perpendicular to a magnetic field B
Energy,
2.
Fleming's right-hand rule , direction of induced is upwards
The picture below is inside of a uniform and constant magnetic field of 2 nt. The...
The apparatus below is submerged in a uniform, constant magnetic field, B. A conducting bar moves to the left at a constant speed v on two conducting rails joined as shown. As a result of the bar moving through this constant magnetic field, a current I is induced in the indicated direction. Which one of the following directions is that of B? a) Toward the right b) Toward the left c) Parallel to the long axis of the bar d) Into...
elp with physics 102 An electron moves through a region of crossed electric and magnetic fields. The electric field E = 2 000 V/m and is directed straight down. The magnetic field B = 0.80 T and is directed to the left. Specify the directions of electric and magnetic forces on the electron if it moves into the paper. For what velocity v of the electron will the electric force exactly cancel the magnetic force? A rod(length = 10 cm)...
A conducting bar moves along frictionless conducting rails connected to a 4.00 omega resistor. The length of the bar is 1.60m and a uniform magnetic field of 2.20T is applied perpendicular to the paper pointing outward as shown a) What is the applied force required to move the bar to the right with a constant speed of 6.00 m/s? b) At what rate is energy dissipated in the 4.00 ohm resistor? A conducting bar moves along frictionless conducting rails connected...
Question 7 The conducting rod shown in the figure has length L and is being pulled along horlizontal, frictionless, conducting rails at a constant metal strip. A uniform magnetic field, directed of the magnetic fieid is 8-1.0 T. (a) What is the magnitude Assume that L15 cm, the speed of the rod is v -5.9 m/s, and the magnitude of emf induced in voits in the rod? (b) What is the current in amperes in the conducting loop? Assume that...
A conducting rod of length script i moves on two horizontal frictionless rails, as in the figure below. A constant force of magnitude 3.00 N moves the bar at a uniform speed of 9.00 m/s through a magnetic field vector B that is directed into the page.
The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.00 Ω, and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let ℓ = 1.20 m. A vertical bar and two parallel horizontal rails lie in the plane of the page, in a region of uniform magnetic field, vector Bin, pointing into the page. The parallel rails run from left to right, with one a...
can someone explain these to me? answers are circled (5 pts) 19. Two parallel conducting rails are connected at one end by a resistor. A bar slides on the rails with speed v, in the direction away from the resistor. The magnetic field that is directed into the page. What is the direction of the current induced in the circuit that consists of the bar, rails and resistor? X X X (a) clockwise (b) counterclockwise (5 pts) 20. A horizontal...
A vertical bar and two parallel horizontal rails lie in the plane of the page. The parallel rails run from left to right, with one a distance ℓ above the other. The left ends of the rails are connected by a vertical wire containing a resistor R. The vertical bar lies across the rails to the right of the wire. Force vector Fapp points from the bar toward the right.In the figure below, a metal bar sitting on two parallel...
w 2. The conducting bar illustrated in the figure moves on two frictionless, parallel rails in the presence of a uniform magnetic field directed into the page. The bar has mass m and its length is l. The bar is given an initial velocity Vi to the right and is released at t=0. Find the speed of the bar as a function of time after it is released.
A conducting rod of length l = 35.0 cm is free to slide on two parallel conducting bars as shown. Resistor R = 8.0 ohm. A constant magnetic field B = 2.50 T is directed into the page. The applied force is 5.0N and rod moves with constant speed v = 2.0m/s.. Find the current in the resistor.