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Physics
Pick out the wrong statement.
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Q. Pick out the wrong statement.
KCET
KCET 2012
Moving Charges and Magnetism
A
The gain in the K.E. of the electron moving at right angles to the magnetic field is zero.
24%
B
When an electron is shot at right angles to the electric field, it traces a parabolic path.
27%
C
An electron moving in the direction of the electric field gains K.E.
31%
D
An electron at rest experiences no force in the magnetic field
17%
Solution:
Electron is negatively charged, hence experiences electrostatic force opposite to the direction of electric field. As a result, an electron moving in the direction of electric field loses kinetic energy.