A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is
A. towards south
B. towards east
C. downward
D. upward
Answer:D
A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is
A. towards south B. towards east C. downward D. upward