Skip to main content
Physics Guru is an online education and competitive examinations preparation portal founded by Manish Verma, an IIT Madras alumnus, providing learning resources for competitive examinations.

The emphasis is on conceptual understanding, analytical thinking and problem solving rather than simply memorising formulas and standard methods.

The objective is to help students understand what they are learning and develop the ability to solve problems they have not seen before.

Q & A

Q.  The net charge in a current carrying conductor is zero, even then it experiences force in magnetic field, why?
 
A. Magnetic force depends not only on the charge but also on the velocity.  The positive charges inside the conductor have zero drift velocity and hence they do not experience any force.  Whereas, the negative charges, i.e. the electrons have non-zero drift velocity when they carry current and hence they experience force.