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Given below are two statements: One is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$

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.

  • ABoth $(A)$ and $(R)$ are true and $(R)$ is the correct explanation of $( A )$
  • BBoth $(A)$ and $(R)$ are true but $(R)$ is NOT the correct explanation of $( A )$
  • C$(A)$ is true but $(R)$ is false
  • D$(A)$ is false but $(R)$ is true.
JEE MAIN 2022, Medium
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