Three very long, straight, parallel wires each carry currents of 10 A, directed into of the page. Thewires pass through the vertices of a right isosceles triangle of side 9 cm. What is the magnitude of themagnetic field at point P at the midpoint of the hypotenuse of the triangle?
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wires pass through the vertices of a right isosceles triangle of side 9 cm. What is the magnitude of the
magnetic field at point P at the midpoint of the hypotenuse of the triangle?
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- An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's field, which has a strength of 5.0105 T. (a) What strength electric field must be applied perpendicular to the Earth’s field to make the election moves in a straight line? (b) If this is done between plates separated by 1.00 cm, what is the voltage applied? (Note that TVs are usually surrounded by a ferromagnetic material to shield against external magnetic fields and avoid the need for such a collection,)A long, straight wire of radius R caries a current I that is distributed uniformly over the cross-section of the wire. At what distance from the axis of the wire is the magnitude of the magnetic field a maximum?Acircularcoiofwireofradius5.Ocmhas2Otums and carries a current of 2.0 A. The coil lies in a magnetic field of magnitude 0.50 T that is directed parallel to the plane of the coil. (a) What is the magnetic dipole moment of the coil? (b) What is the torque on the coil?
- A particle moving downward at a speed of 6.0106 m/s enters a uniform magnetic field that is horizontal and directed from east to west. (a) If the particle is deflected initially to the north in a circular arc, is its charge positive or negative? (b) If B = 0.25 T and the charge-to-mass ratio (q/m) of the particle is 40107 C/kg. what is ±e radius at the path? (c) What is the speed of the particle after c has moved in the field for 1.0105s ? for 2.0s?The cross-sectional dimensions of the copper strip shown are 2.0 cm by 2.0 mm. The strip carries a current of 120 A, and it is placed in a magnetic field of magnitude B = 1.4 T. What are the value (in V) and polarity of the Hall potential in the copper strip? (Assume the charge carrier density of copper is 8.0 x 1028 electrons/m³). B 2.0 cm X 2.0 mm value polarity The ---Select--- of the strip is at a higher potential.As shown below, a horizontal 4.4 m long wire with a mass of 0.74 kg is carrying a current. The wire is completely immersed in a uniform 2.3 T B-field that is perpendicular to the current direction and as a result the wire levitates. Determine the current through the wire and the direction of the external B-field. I = Direction of external B-field Choose direction ✓
- Tutorial Exercise In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.495 cm thick is positioned along an east-west direction. Assume n = 8.46 × 1028 electrons/m³ and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the -12 conductor results in a Hall voltage of 4.37 x 10 V, what is the magnitude of the Earth's magnetic field at this location? Part 1 of 3 - Conceptualize From this Table of Approximate Magnetic Field Magnitudes, the magnitude of the Earth's magnetic field is about 50 μT. We expect a result with this order of magnitude. Part 2 of 3 - Categorize We will find the magnitude of the magnetic field from the equation for the Hall effect voltage. Part 3 of 3 - Analyze Hall effect voltage is given by the following. IB nqt' AVH where I is the current, n is the volume density of electrons, B is the magnitude of the magnetic field, and t is the thickness of the copper bar. Solving…When the direct current is 2.00 A in a single wire of the bundle of 10 wires, the total current in the bundle of wire that approximates the long straight wire is 20.0 A. What isthe magnitude of the B field 3.00 cm from this long straight wire carrying a current of20.0 A? What is the magnitude of the B field 9.00 cm from the wire carrying 20.0 A?Tutorial Exercise In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.415 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.52 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?
- A wire segment of length 10.3 m is arranged so the current goes in the +y direction with a magnitude of 3.30 A. If you approximate this as a long straight wire, what is the magnetig field magnitude 8.25 cm away from the wire in Gauss (1 G or Gauss = 0.0001 T)?An infinite solid cylindrical conductor has radius c and carries a current I. The current is uniformly distributed over its cross section. A coaxial infinite cylindrical conducting shell with inner radius b and outer radius a carries the same magnitude but opposite direction current. If I= 120 A, c= 0.4 cm, b= 1.8 cm, a= 2 cm. What is the magnitude of the B-field at the distance of: 1) 0.3 cm from the center of the system. 2) 1 cm from the center of the system.A wire with length of 3.0 cm carries a 2.0 A in the vertical direction. The rest of the wireis shielded so it does not add to the magnetic field produced by the wire. Calculate themagnetic field which is 2 meter from the wire in the X-direction.