238 Physics Laboratory Manual Loyd find an example of an important industrial de

Question

238 Physics Laboratory Manual Loyd find an example of an important industrial device in which electricity is created by varying the ) angle OsA between the conductor-enclosed area and the B vector. What is this device called? e that in science and engineering area is considered a vector quantity. Its magnitude is defined as in elementary geometry, length times width for a rectangle, but what is meant by its direction? Note that area's vector arrow cannot be in the plane of the surface because there it would have an infinite number of possible directions

Explanation / Answer

4.

Area vector is always perpendicular to the plane. so an arrow pointing peprndicular to the plane gives the direction of area

3.

generator is one such device in which the armature is rotated between magnetic poles to create electricity. when the armature is rotated , the angle between the area and magnetic field change and as a result we get electricity

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