3. The magnetic force on a wire carrying a current is a. Independent of the rela

Question

3. The magnetic force on a wire carrying a current is
a. Independent of the relative directions of the field and current.
b. perpendicular to the direction of the current flow and the direction of the magnetic field
c. perpendicular to the current flow and parallel to the magnetic field
d. parallel to the current flow and perpendicular to the magnetic field

4. When a charge particle moving in a magnetic field traveling so that its velocity vector is perpendicular to B, its path will be
a. an ellipse
b. a parabola
c. a circle
d. a logarithmic spiral

5. A coil of wire is connected to a galvanometer, when a bar magnet is moved in and out of the coil, the galvanometer read a current. The current results because
a. The coils acts like a transformer
b. The changing magnetic field induces an electric field in a wire
c. An electromagnetic wave is generated
d. The wire is ferromagnetic

6. Electromagnetic Induction is used in the operation of
a. Generator
b. Transformer
c. Motor
d. All of the above



7. A current can be made to flow in a coil of wire if
a. it is connected to a battery
b. it is put into motion near a magnet
c. A magnet is put into motion near it.
d. All of the above

Explanation / Answer

3)b 4)c 5)b 6)b 7)d

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