A charge q moving with velocity $\vec v$ in a magnetic field $\vec B$ experiences a force $\vec F$. Which pair of quantities are mutually perpendicular?
A. $\vec F\&\vec v$
B. $\vec F \&\vec B$
C. $\vec v\&\vec B$
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A and B only
According to Lorentz force,
$\vec F=q(\vec v×\vec B)$
∴ $\vec F$ and $\vec v$ are ⊥
$\vec F$ and $\vec B$ are ⊥