Hello,

I need some help with the following question.
Thank You

To use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your ?

A.thumb in the direction of the magnetic flux

B.thumb in the direction of the electromagnetic force

D. Forfinger in the direction of the lines of force

D. forefinger in the direction of the motion

Since this is not my area of expertise, I searched Google under the key words "voltage direction finger left hand" to get these possible sources:

http://books.google.com/books?id=08wHm9EqX20C&pg=PA214&lpg=PA214&dq=voltage+direction+finger+left+hand&source=web&ots=X-HkG8qUHe&sig=m5fWoWpq_CkjeiTH6wh-76EyWdU&hl=en
(Broken Link Removed)
http://www.tpub.com/neets/book2/1c.htm

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

To determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you can use the left-hand rule. The left-hand rule is a way to relate the direction of the magnetic field, the direction of the motion, and the direction of the induced voltage.

To use the left-hand rule, you should follow these steps:

1. Extend your thumb, index finger, and middle finger all at right angles to each other.
2. Point your forefinger in the direction of the motion of the conductor.
3. Point your middle finger in the direction of the magnetic field lines of the stationary magnetic field.
4. Your thumb will then indicate the direction of the induced voltage.

Now let's look at the answer choices:

A. Thumb in the direction of the magnetic flux: This is not correct because the thumb should be pointing in the direction of the induced voltage, not the magnetic flux.

B. Thumb in the direction of the electromagnetic force: This is not correct either because the thumb should be pointing in the direction of the induced voltage, not the electromagnetic force.

C. Thumb in the direction of the motion: This is also incorrect because the thumb should be pointing in the direction of the induced voltage, not the motion itself.

D. Forefinger in the direction of the motion: This is the correct answer. According to the left-hand rule, you should point your forefinger in the direction of the motion. Thus, the answer is D.

Therefore, to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you should point your forefinger in the direction of the motion.