When a charged particle moving with velocity V⇀ is subjected to a magnetic field of induction B→ the force on it is non-zero, This implies that:

A
$a n g l e b e t w e e n \overset{⇀}{V} a n d \overset{⇀}{B} i s n e c e s s a r i l y 90^{0}$
B
$a n g l e b e t w e e n \overset{⇀}{V} a n d \overset{⇀}{B} c a n h a v e a n y v a l u e o t h e r t h a n 90^{0}$
C
$a n g l e b e t w e e n \overset{⇀}{V} a n d \overset{⇀}{B} c a n h a v e a n y v a l u e o t h e r t h a n z e r o a n d 180^{0}$
D
$a n g l e b e t w e e n \overset{⇀}{V} a n d \overset{⇀}{B} i s e i t h e r z e r o o r 180^{0}$

Solution:

When a charged particle q is moving in a uniform magnetic field $\overset{⇀}{B}$ with velocity $\overset{⇀}{V}$ such that angle between $\overset{⇀}{V} a n d \overset{⇀}{B} b e θ$ , then due to interaction between the magnetic field

produced due to moving charge and magnetic field applied, the charge q experiences a force

which is given by

When a charged particle moving with velocity $\overset{⇀}{V}$ is subjected to a magnetic field of induction
$\vec{B}$ the force on it is non-zero, This implies that:

Solution:

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