Moving a coil of wire towards a magnet will not create an emf in the coil if the
ID: 1635651 • Letter: M
Question
Moving a coil of wire towards a magnet will not create an emf in the coil if the magnetic field is along the normal of the coil. An electromagnetic wave is an example of a longitudinal wave. A polarizer only lets the part of the electric field that is parallel to the transmission axis pass through. A convex mirror only forms virtual images The current in the secondary coils of a step-down transformer is larger than the current in the primary coils. C. Matching. Place the letter of the correct answer next to the statement. Each choice will be used only once. A. direct current B. Alternating current C. magnetic field D. magnetic flux E. induced emf F. induced current G. Lenz's Law H. Step-up I. Step-down J. Electric field K. speed of light L. Magnetic field M. frequency N. wavelength O. energy density P. intensity Q. unpolarized R. polarized S. polarizer T. transmission axis. U. Malus' Law V. perpendicular W. same X. focal point Y. concave Z. conveExplanation / Answer
solving B parts of the question
(9) False
Explanation : As magnet is moved normal to plane of coil so flux will be changed so emf will be induced .It the angle was 90 degree to normal of coil,then emf would have been zero
(10)False
Explanation:Electromagnetic waves can either be transverse or a combination of transverse and longitudinal. The simplest and most common electromagnetic waves are transverse
(11)True
Explanation: A polarizer has a transmission axis, and it passes the components (projections) of the electric field vectors that are parallel to its transmission axis
(12)True
Explanation As focal length of convex mirror is negative ,image formed will always be virtual
(13)True
Explanation :Step down transformer step down the voltage in seconday coil so current will be more .
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