Question

If a conducting rod $AB$ placed in a uniform magnetic field pointing in positive z-direction, moves parallel to y-axis, then end $A$ of the rod will be

• A. Neutral
• B. Positively charged
• C. Negatively charged
• D. None of these

Answer 1

The correct option is B Positively charged

As conducting rod $AB$ moves parallel to y-axis in uniform magnetic field pointing in positive z-direction, then according to Flemings left hand rule, the electrons in the rod suffer's a force towards end $B$. Hence, the end $A$ the rod will positively charged.