Posted by **unknown** on Sunday, June 12, 2011 at 4:26pm.

A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two insulating supports.)

- physics -
**drwls**, Sunday, June 12, 2011 at 5:14pm
if there is no net force, the magnetic force BIL equals the weight, M g.

Therefore

B = M g/(I L)

= 0.2*9.8/(2.0*0.8) = 12.25 T

The direction of the B field must produce an upward force. Use the right hand rule.

## Answer this Question

## Related Questions

- Science (Physics) - A conductor carries a current of 25 A and is at right angles...
- Physics - A long coaxial cable consists of two concentric conductors. The inner ...
- physics - A conductor of length 0.8 m carrying a current of 2.5 A is kept in a ...
- physics - What is the direction of the force acting on a current-carrying ...
- physics - A current I = 16 A is directed along the positive x-axis and ...
- Physic ~ pls help - A heavy conductor (mass m, length `, resistance R) is ...
- Physics -work shown - A heavy conductor (mass m, length `, resistance R) is ...
- Physics - pls help - A heavy conductor (mass m, length `, resistance R) is ...
- physics - A current-carrying conductor experiences a force upward in a magnetic...
- PHYSICS - A conductor of length 0.5m moves in a uniform magnetic field of flux ...

More Related Questions