- #1

milkism

- 118

- 15

- Homework Statement
- A conductor CD with a length of 30 cm is parallel to the z-axis and rotates at a distance r= 50 cm around this axis with a rotational frequency of 120 revolutions per minute in a radial magnetic field B in the r-direction.

1) Calculate the EMF if B is 0.25 T.

2) A direct current I = 4.5 A is sent through this conductor according to the positive z-axis. Then calculate the work done W at 1 single revolution of the conductor around the z-axis.

3) Also calculate the power P required for this.

- Relevant Equations
- Look at solution.

For 1) I used $$V=Blv=Blwr$$, where $$w= \frac{4\pi rad}{sec}$$, $$l= 0.30m$$ and $$r=0.50m$$.

I got 0.5 V.

For 2) I used W=Vq=VIt, where $$q=It$$, where t=0.5 s, we get 1.125 J.

For 3) I used P=IV, we get 2.25 W.

Are these correct?

I got 0.5 V.

For 2) I used W=Vq=VIt, where $$q=It$$, where t=0.5 s, we get 1.125 J.

For 3) I used P=IV, we get 2.25 W.

Are these correct?