Calculate
(a) Calculate the magnetic field created by a coil made of copper wire that
has 200 turns in 5 cm and carries a current of 5 A.
(b) What is the magnitude of the flux density or inductance created by this coil in a vacuum?
(a) All of the information necessary to calculate the magnetic field is given.
(b) Because the coil is in a vacuum, the flux density is given
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Force on a Wire: A straight wire that is 0.60 m and carrying a current of 2.0 A is placed at an angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of magnitude 0.18 N, what angle does the wire make with respect to the magnetic field?
A. 20° B. 25° C. 30° D. 35° E. 60°
For all adiabatic processes:
A. the entropy of the system does not change B. the entropy of the system increases C. the entropy of the system decreases D. the entropy of the system does not increase E. the entropy of the system does not decrease
According to Einstein's theory of general relativity, a ray of light bends in a gravitational field
Indicate whether the statement is true or false
Four 2.0-µC point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. What is the electric potential (relative to infinity) at the midpoint of the rectangle? (k = 1/4??0 = 9.0 × 109 N ? m2/C2 )
A) 1.3 MV B) 2.9 MV C) 3.5 MV D) 7.8 MV