1. What is the magnitude of the magnetic field at a point 100 cm from a long, thin conductor carrying a current of 1.00 A.
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- A given neuron in the brain carries a current of 3.1 * 10-8 A. Ifthe SQUID detects a magnetic field of 2.8 * 10-14 T, how far awayis the neuron? Treat the neuron as a straight wire.A. 22 cm B. 70 cmC. 140 cm D. 176 cmWhat is the force per meter on a lightning bolt at the equator that carries 16000 A perpendicular to the Earth's 3.20x10-5-T field? What is the direction of the force if the current is straight up and the Earth's field direction is due south, parallel to the ground? E W Straight up Straight down No forceB. An electron is moving through a magnetic field in a direction perpendicular to the field as shown below. The charge is moving with a speed of v = 3.5 x 105 and it experiences a force of F = 1.79 x 10-13 N. What is the magnitude and direction of the magnetic field? The charge of an electron is q -1.6 x 10-19 C. 12
- A current I = 30 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.18 N/m acts on the conductor in the negative y-direction. Calculate the magnitude and direction of the magnetic field in the region through which the current passes. magnitude ________T direction a. +x direction b. -x direction c. +y direction d. -y direction e. +z direction f. -z direction6.A2.1 mm -diameter copper wire carries a 39 Acurrent (uniform across its cross section). Determine the magnetic field at the surface of the wire. Determine the magnetic field inside the wire 0.50 mm below the surface
- A magnetic field has a magnitude of 0.0016 T, and an electric field has a magnitude of 6.4 x 103 N/C. Both fields point in the same direction. A positive 1.7-µC charge moves at a speed of 4.2 x 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge. Number .01142 B Units N V 90° E3. See the attached figure for this problem. A charge of 6.46 x 10^6 C moves to the right as shown through a region containing both a magnetic field of strength 4.03 T directed into the screen and an electric field of strength 8.72 x 10^5 N/C directed downward. The charge continues through the region at a constant velocity (no acceleration). What is the charge s speed? 2.16E+05 m/s 1.73E+05 m/s 8.64E+04 m/s 6.48E+04 m/s5. A long cylindrical conductor of radius R carries a current I. The current density is non- uniform, and is a function of the radius according to J = br, where b is a constant. Find an expression for the magnetic field for both rR (i.e. inside and outside the conductor). Assume that R is measured from the center of the conductor.
- 1. A magnetic field has a magnitude of 1.20 x 10 T, and an electric field has a magnitude of 4.70 x 10° N/C. Both fields point in the same direction. A positive 2.5 µC charge moves at a speed of 3.00 x 10° m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge. N55. A circular loop of wire 1.0 cm in radius carries a current of 30 A. The magnetic field at the center of the loop is a. 1.9 mT b. 2.4 mT C. 3.8 mT d. 12 µT e. 48 μ.I2 3 2 1 2 3 A Consider two infinitely long currents I =1 A (traveling in the +x direction) and I2 = 2 A (traveling in the +y direction) as shown. Each major division is 1 cm.