A straight line conductor of length 0.4 m is moved with a speed of 7m/s perpendicular to a magnetic field of intensity 0.9 Wb/m?. The induced e.m.f. across the conductor will be
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- QB2d. Calculate the EMF induced in the railway carriage wheel of radius R=840 mm by the magnetic field of the Earth. Consider that the magnetic field of the Earth makes an angle of 71.5 deg with the horizontal surface of the railway track. Take the speed of the carriage to be v = = 158 km h¹ and the value of the magnetic field of the Earth B = 10-5 T. Provide your answer in microvolts (10-6 V=1 μV): for example, if you calculated the value to be 0.000075 V, then enter 75 as your answer. Enter your answer in the box below.A square loop of wire is inside a region of changing magnetic field (see figure below). The sides of the square loop are 0.1m with a resistor of resistance 2502 connected to one of the sides. The magnetic field increases linearly from 0.2T to 0.5T in 3s. What is the magnitude of E.M.F induced across the resistor. O ImV 10V 232 2 Ο ΙμνA rectangular loop of wire is moving toward the bottom of the page with a speed of 0.020 m/s. The bottom part of the loop is outside the region. The field strength inside the region is 2.4 T and the magnetic field outside the region is and the magnetic field outside the region is zero. The width of the loop is 0.080 m and the length is 1.0 meter. What is the current induced in the wire if the resistance of the loop is 0.12 ohm?
- An automobile with a radio antenna 1.3 m long travels at 108.0 km/h in a location where the Earth's horizontal magnetic field is 3.0 ✕ 10−5 T. What is the maximum possible emf (in V) induced in the antenna due to this motion?Consider a conductive bar sliding on a pair of parallel conducting rails with a uniform perpendicular magnetic field passing through. Suppose the induced e.m.f. E=1.0V when the bar is sliding with speed of v=1 m/s. What would be the induced e.m.f. if you double the speed?Consider the electromagnetic armature in the magnetic field as shown: μi Z If μ = 50.0 Joules per Tesla (J/T) and B= 20 Tesla (a) What is the induced torque, in N.m, if the angle = 35°? (b) What if the angle = 15°? (c) What is the direction of the torque? B Ф
- (L11) A thin 0.120 m copper rod on the x-y plane and parallel to the x axis moves with a constant velocity of 4.17 m/s in the +y direction as shown in the figure. There is a uniform magnetic field 5.84E-2 T everywhere in space pointing in the -z direction (into the page). The electric potential is measured to be Va at point a and V₁ at point b. What is the potential difference Va-V₁ (write down the sign and magnitude)? +y Va ZO Vb +xBen coils a wire to create a solenoid that is 25-cm long with 300 turns. Mak coils a wire to create a solenoid that is 10-cm long with 200 turns. They place their solenoids in otherwise identical circuits so that the steady-state current is the same for each solenoid. Determine the ratio of the magnetic fields of the two solenoids BPh/BF.