$OABC$ is a current carrying square loop an electron is projected from the centre of loop along its diagonal $AC$ as shown. Unit vector in the direction of initial acceleration will be
$OABC$ is a current carrying square loop an electron is projected from the centre of loop along its diagonal $AC$ as shown. Unit vector in the direction of initial acceleration will be
- A
$\hat k$
- B
$ - \,\left( {\frac{{\hat i\, + \,\hat j}}{{\sqrt 2 }}} \right)$
- C
$=- \hat k$
- D
$\frac{{\hat i\, + \,\hat j}}{{\sqrt 2 }}$
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Assertion $(A)$ : In an uniform magnetic field, speed and energy remains the same for a moving charged particle.
Reason $(R)$ : Moving charged particle experiences magnetic force perpendicular to its direction of motion.
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