The plane of a rectangular coil of dimension 5 cm by 8 cm is perpendicular to the direction of a magnetic field B. The coil has 29.7 turns and a total resistance of 12.8 Ohms. At what rate must the magnitude of B change in order to induce a current of .227 A in the windings of the coil in units of T/s?
A two turn circular wire loop of radius .262 m lies in a plane perpendicular to a uniform magnetic field of magnitude .373 T. Now the wire is reshaped from a two turn circle to a one turn circle in .134 s. What is the magnitude of the average induced emf in the wire during this time in units of V?
See attached file. In the figure, ABCD is a conducting wire. A conducting bar EF is laid on top of the wire and slid toward BC with a speed of .030 m/sec. A constant magnetic field B of 2.0*10^(-5)Tesla points out of the paper. The length of BC is 1.5m and the distance of the bar from EF is initially 2.0m. 1) What is the i
A 5 meter long copper wire, with a cross sectional area of 1.0mm^2 is bent into a circle. This loop of wire is mounted in a vertical plane between the poles of a magnet. This magnet is aligned so that its field points in a horizontal direction from the west to the east; the magnitude of this field is 7.25*10^(-4)T. The loop of w
See attached file. A1. Find the current through and potential difference across each resistor in the following circuit.
A rod of length l is pivoted at one end rotates with uniform angular velocity w in a uniform magnetic field of intensity B. The magnetic fluxes are perpendicular to the plane of rotation of rod. Calculate the induced EMF across the two ends of rod.
PART ONE: A battery that supplies an emf of 6.0 V has an internal resistance of 0.20 ohm. It is connected to a load resistor of 8.8 ohms. The total Current in the entire circuit is: A) less than 0.25 A B) between 0.25 A and 0.50 A C) between 0.50 A and 1.0 A D) greater than 1.0 A PART TWO: A battery of fou
The mutual inductance of two coils is 0.750 H. Calculate the average emf induced in secondary if the current in the primary reaches 6.00 A in 0.030 sec. A) 150 V B) 0.00375 V C) 0.135 V D) -150 V
See attached files. 1. At a certain location, Earth has a magnetic field of 0.6*10^4T pointing 75 degrees below the horixontal in a north-south plane. A 10m long straight wire carries a 15A current. A) If the current is directed horizontally toward the east, what are the magnitude and direction of the magnetic force on th
See attached file for problems of resistance, tungsten filaments, current, emf.
The mutual inductance of two coils is 0.750 H. How do I find the average emf induced in the secondary if the current in the primary reaches 6.00 A in 0.0300s?
The length of a conductor linking a magnetic field is 0.060m, and the flux density of the field is 0.040 N/Am The conductor is moving down through the flux with a velocity of 1.5 m/s. What is the induced emf?
A conducting loop of area A and total resistance R is suspended by a torsion spring of constant k in a uniform magnetic field B=B e_y. The loop is in the yz plane at equilibrium and can rotate about the z-axis with the moment of inertia I as shown in figure. The loop is displaced by a small angle Theta from equilibrium and relea
A circular current loop made of flexible wire is located in a magnetic field B; you may keep B constant or vary it. Describe three ways an emf can be induced in the loop.
A coil of 500 turns is wound on a wooden ring having a mean diameter of 8 cm and a cross sectional area of 1.5 cm^2. Assuming relative permeability of wood is 1, calculate the self-inductance of the coil and the emf induced in it when the direction of a DC current of 5A flowing in it is reversed in 0.2 sec?