A beam of electrons passing through a magnetic field experiences maximum deflection if the direction of the beam is
A) parallel to the field lines.
B) perpendicular to the field lines.
C) none of these
Answer: B
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If the number of turns is tripled for an inductor of fixed length and fixed cross-sectional area, what happens to its inductance?
A. it stays the same B. it triples C. it becomes 9 times the original value D. it decreases by a factor of 3 E. it decreases by a factor of 9
The mixing of which pair of the following atoms does not occur by vacancy diffusion?
(a) Gold and silver (b) Copper and nickel (c) Platinum and palladium (d) Hydrogen and palladium
If the torque acting on an object about a certain axis is zero, what can we say about the angular momentum of this object with respect to this axis?
1.It is zero. 2.It is constant. 3.It can never be zero. 4.Nothing, angular momentum has nothing to do with torque.
In all interactions __________ number is conserved
Fill in the blank(s) with correct word