Homework Help: Physics

Posted by sophie on Monday, April 13, 2009 at 9:00pm.

The polarity of an electromagnet can be determined using the second right-hand rule.
A. True
B. False
Is it B?

Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.
A. True
B. False
Is it a?

The direction of the force on doubly ionized helium atoms (alpha particles) moving at right angles to a magnetic field is opposite to the direction of force given by the third-hand rule.
A. True
B. False
Is it a?

Physics - bobpursley, Monday, April 13, 2009 at 9:14pm
I use a right hand rule for A, but I dontknow what your "second right hand rule" is.

Increasing current increases B.

I dont know what the "third hand rule " is.
Physics - sophie, Monday, April 13, 2009 at 9:26pm
there are four right hand rules, I will re-read it

so the second one is b

thanks

Answer this Question

Related Questions

Physics - 1)The polarity of an electromagnet can be determined using the second ...
Physics - The polarity of an electromagnetic can be determined using the second ...
physics - Current passing through a conductor is increased from 10 A to 15 A. ...
Physics!!! - When does a magnetic field induce maximum EMF in a wire moving with...
physics - When does a magnetic field induce maximum EMF in a wire moving with a ...
Physics - current passing through a conductor is increased from 10 A to 15 A ...
Right Hand Rule - Consider an electron near the Earth's equator. In which ...
PHI 103 - Will someone please confirm my answers here. I'm stumped. Feel ...
Physics - A capacitor of capacitance C= 10mF, is charged using a battery of ...
art help needed - #1. Corot painted only in his studio using professional models...

For Further Reading

First Name:
School Subject:
Answer: