Homework Help: physics

Posted by Sandhya on Tuesday, June 16, 2009 at 11:42pm.

A straight horizontal rod A of mass 50 gm and length 0.5 m, is placed in a uniform horizontal magnetic field of 0.2 T, perpendicular to A. Calculate the current in A if the force acting on it just balances it weight.

physics - drwls, Wednesday, June 17, 2009 at 12:37am
Require that
M g = B I L

Solve for I (amps). Make sure M is in kg.

I = M g/(B L)

Answer this Question

Related Questions

physics - A horizontal rod with a length of 0.250 is mounted on a balance and ...
physics - A horizontal rod with a length of 0.250 is mounted on a balance and ...
Physics - A horizontal wire of length 0.48 m, carrying a current of 6.8 A, is ...
physics - A horizontal wire of length 0.78 m, carrying a current of 6.8 A, is ...
physics - A uniform horizontal wire with a linear mass density of 0.48 g/m ...
Physics - A thin uniform rod (length = 1.3 m, mass = 3.2 kg) is pivoted about a ...
PHYSICS - A thin 2.82 m long copper rod in a uniform magnetic field has a mass ...
physics - A thin 2.82 m long copper rod in a uniform magnetic field has a mass ...
Physics (please help!!!!) - A thin uniform rod (length = 1.3 m, mass = 4.1 kg) ...
College Physics Homework. Please help! - A metal bar with a length of 0.30 m and...

For Further Reading

First Name:
School Subject:
Answer: