Posted by **Daniel** on Monday, March 12, 2012 at 1:03am.

The drawing shows a copper wire (negligible resistance) bentinto a circular shape with a radius of 0.48 m. The radial sectionBC is fixed in place, while the copper bar ACsweeps around at an angular speed of 16 rad/s. The bar makeselectrical contact with the wire at all times. The wire and the barhave negligible resistance. A uniform magnetic field existseverywhere, is perpendicular to the plane of the circle, and has amagnitude of 3.4 x 10-3 T. Find the magnitude of thecurrent induced in the loop ABC.

resistance = 3 ohms

I am having trouble figuring out the algebra for the equation.

I have the emf = -N(ΔF/Δt) but I don't know how to relate the angular speed into the equation. I could find the current with the equation

I= emf*r but I don't know how to find the emf properly

## Answer this Question

## Related Questions

- Physics - A copper wire has a resistance of 24 Ω at 20°C. An aluminum wire ...
- Physics - A length of copper wire is shaped into a single circular loop of ...
- physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
- physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
- Ap physics b - A piece of copper wire is formed into a single circular loop of ...
- Physics - A piece of copper wire is formed into a single circular loop of radius...
- physics - Suppose that you wish to fabricate a uniform wire out of 0.900 g of ...
- physics - A solid copper object hangs at the bottom of a steel wire of ...
- physics - 1. A solid copper cylinder hangs at the bottom of a steel wire of ...
- physics - A solid copper object hangs at the bottom of a steel wire of ...

More Related Questions