physica magnetic effect of electric currnet
Answers
Answer:
When electric current flows through a current carrying conductor, it produces a magnetic field around it. This can be seen with the help of a magnetic needle which shows deflection. The more the current, the higher the deflection. If the direction of current is reversed, the direction of deflection is also reversed.
Answer:
For a single charge to revolve in a magnetic field, it's centripetal force for circular motion must be given by the magnetic force.
Therefore, we can write the equation balancing forces,
mv^2/R = qvB
Hence,
R = mv/qB
Now,
Time period = 2πR/v for a particle performing circular motion,
Hence,
T = 2π(mv/qB)/v = 2πm/qB
Clearly, this means the time period of the particle does not depend on its velocity but depends only on the mass, charge and magnitude of magnetic field.
So as in the case given here, the two charges are in same magnetic field, with identical properties, and hence their time period will be equal though their velocities are unequal.
The independence of time period of a charged particle of its velocity in a magnetic field is highly applied in the concept of Cyclotrons.
Hope this helps you !