a) Current flow
b) Induced emf
c) Magnetic field
Mechanical force
a) Simple product
b) Dot product
Cross product
d) Any of these
Zero
b) B І 𝑙
c) B І 𝑙 sinθ
d) B І 𝑙 cosθ
a) Straight
Helical
c) Circular
d) Elliptical
a) Perpendicular to the axis.
Parallel to the axis.
c) At an angle of 45° with the axis.
d) Zero.
Is the same as on its outer surface.
b) Is zero.
c) Is greater than that on its outside surface.
d) Is lower than that on its outside surface.
a) A force of attraction between the two conductors.
A force of repulsion between the two conductors.
c) No force between them.
d) None of these
a) No force acts on the conductor at any point.
b) An axial force acts on the conductor tending to increase its length.
A radial force acts towards the axis tending to reduce its cross-section.
d) A radial force acts away from the axis tending to increase its cross-section.
a) Current
Emf
c) Resistance
d) Power
a) AT/m
b) Webers/m
AT/weber
d) H/m.
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