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A) Slow Down
According to lenz's law it will oppose the change of by which it is producing hence magnetic force direction will be opposite to the motion of rod.
will upvote if answered correctly, thank you! QUESTION 15 Consider a uniform magnetic field B =...
will upvote if answered correctly, thank you! QUESTION 13 Consider a uniform magnetic field B = - Bolz, where Bo is a positive constant and iz points out of the page. A conducting rod sits on the rails of a conducting support of height H containing a resistor R. Some external force is used to move the rod in the x direction according to X(t) = L + at“, where L and a are positive constants. What is the magnitude...
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 metal crossbar with resistance R lies across conducting rails in a constant magnetic field B pointing out of the page as shown. The bar is moving at a speed v as indicated to the right. The rails have negligible electrical resistance compared to the crossbar, and you may neglect friction in the sliding of the crossbar. (a) What is the direction of the induced current flowing in the crossbar? Explain your reasoning. (b) Systematically develop an expression for the...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
(3) A uniform field varies according to B() 4.0+20+0.5 2 (B is in tesla and t in seconds). A wire loop with sides of length 4 cm is present as shown. I (a) What is the direction of the induced current in the loop? (b) What is the induced EMF in the loop at t - 0 s? What is the current? (c) What is the EMF and current at t-10 s? Two rods (shown in black in the figure)...
Please help with both problems. Im really lost on this chapter Group Problem 1. A conducting bar with mass m and resistance R slides on frictionless conducting rails, separated by a distance 1 from each other, in a region that has a static uniform magnetic field B directed into the page (see figure below). An external agent is pushing the bar, maintaing its motion to the right with constant velocity ū. At time t = 0, the agent abruptly stops...
A conducting rod spans a gap of length L = 0.315 m and acts as the fourth side of a rectangular conducting loop, as shown in the figure. A constant magnetic field B = 0.45 T pointing into the paper is in the region. The rod is moving under an external force with an acceleration a= At2, where A = 6.5 m/s4. The resistance in the wire is R= 110ΩPart (a) Express the magnitude of the magnetic flux going through...
A conducting loop is made in the form of two squares of sides s1- 3.9cm and s2 6.7 cm as shown. At time t-0, the loop enters a region of length L = 19.5 cm that contains a uniform magnetic field B-1.8 T, directed in the positive z-direction. The loop continues through the region with constant speed v = 44 cm/s. The resistance of the loop is R 1.4 2 1) At time t = t1 = 0.03 s, what...
1. A steady, uniform magnetic field of magnitude B, exists in the horizontal, shaded region. This field is directed downward, as indicated. A rectangular loop of rigid, conductive wire, of length L, width W mass m, and resistance R, is initially at rest on a horizontal, frictionless surface, with its east end located at the edge of the field, as shown couninate natn north L easr side 1 X X X X W X X side 2 X X d...