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Magnetic Field Strength (B) Telsa (T) = 1 N/A m Gauss = 10 -4 T

Magnetic Field Strength (B) Telsa (T) = 1 N/A m Gauss = 10 -4 T Magnetic Force on a moving charge F B = |q|vBSin. X (Directed into the page)  (Directed out of the page). B. +q. v. X. X. X. X. X. X. X. X. X. X. +q. X. X. X. X. X. +. X. X. X. X. B. E. X. X. X.

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Magnetic Field Strength (B) Telsa (T) = 1 N/A m Gauss = 10 -4 T

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  1. Magnetic Field Strength (B) Telsa (T) = 1 N/Am Gauss = 10-4 T Magnetic Force on a moving charge FB = |q|vBSin X (Directed into the page)  (Directed out of the page)

  2. B +q v X X X X X X X X X X +q X X X X X

  3. + X X X X B E X X X X -q - A charge of –q is shot into a region of E = 20,000 N/C and B = -.50T. What must be the velocity of the charge so that it is not deflected?

  4. B v +q Describe the motion of this charge

  5. Magnetic Force on a current carrying wire I I             FB = ILBsin

  6. Find the torque on this rectangular loop of wire L1 I B L2

  7. Magnetic Fields created by current carrying wires I B = 0I/(2r) 0 = permeability of free space (4 x 10-7 Tm/A)

  8. e+ 2 x 105 m/s 4 cm I 20 A Find the magnetic force on the proton

  9. Find the magnetic force per unit length that each wire exerts on each other. I1 I2

  10. Motional EMF FB = qvBsin X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X v Conducting wires moving in a magnetic field

  11.  = vBL X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X v

  12. Faraday’s Law of Electromagnetic Induction: The magnitude of the induced EMF is equal to the rate of change of magnetic flux through the circuit. Magnetic Flux B = BAcos  = -dB/dt B B

  13. Lenz’s Law: When magnetic flux is changing, an induced current will occur to oppose the change in magnetic flux. N N

  14. A coil of wire of radius 8.4 cm is rotating in a magnetic field of 0.75 T. If it starts and an angle of 0 degrees and rotates to and angle of 45 degrees in 1.5 sec, find the magnitude of the induced voltage. What direction will the current flow in the wire? B

  15. + X X X X B E X X X X q - A charge of q is shot into a region of E = 15000 N/C and B = .85T. What must be the velocity of the charge so that it is not deflected?

  16. Find the magnetic force per unit length that each wire exerts on each other. I1 I2

  17. A conducting wire is moving with a velocity of 0.35 m/s in a magnetic field of 0.90 T. Find the magnitude of the induced EMF and the electric field. Determine the direction of the electric field         d = 7.5 cm V    

  18. Determine the direction that this loop of wire will spin. I B

  19. Determine the magnitude of the magnetic field generated by the wire below at a point 6.5 cm from the wire. Make a sketch to indicate the direction of the magnetic field. I = 12A

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