Wednesday

April 23, 2014

April 23, 2014

Posted by **Ulises** on Tuesday, April 9, 2013 at 4:38pm.

Write an expression for current I(t) in terms of B,L,R,ω and t (enter omega for ω).

(b) How much work is done by the generator per revolution? Express your answer in terms of B,L,R and ω (enter omega for ω).

(c) To make it twice as hard to turn (twice as much work), what factor would you have to multiply the resistance R?

No one has answered this question yet.

- physics -
**MeSelf**, Wednesday, April 10, 2013 at 3:26ama) L^2*B*omega*sin(omega*t)/R

- physics -
**MeSelf**, Wednesday, April 10, 2013 at 4:04amthe magnetic flux will be:

Φ = A*B cos(w*t)

Then the electromotrix force will be:

-dΦ/dt = A*B*w*sin(w*t) = ε(t)

Since the current is given by

I(t) = ε(t)/R

we have

I(t) = L^2*B*w*sin(w*t)/R

- physics -
**Espartan**, Wednesday, April 10, 2013 at 8:15amc)the factor is 1/2

- physics -
**sat**, Wednesday, April 10, 2013 at 2:24pmpart b plsssss

**Related Questions**

Physics - A CD rotates at 500 (revolutions per minute) while the last song is ...

physics - consider the loop in the figure. The area=600m, and it spins with ...

physics - If the CD rotates clockwise (let's take clockwise rotation as positive...

physics - A rectangular loop of side 8cm and 2cm with a smal cut is movg out of ...

PHYSICSI - The rotating loop in an AC generator is a square 11.0 cm on a side. ...

Physics - A square conducting loop with sides of length L is rotation at a ...

Physics - A square conducting loop with sides of length L is rotation at a ...

Physics - A square conducting loop with sides of length L is rotation at a ...

Physics - A square conducting loop with sides of length L is rotation at a ...

Physics - A square loop 10cm on a side carries a current I' = 1A, and is placed ...