Physics

posted by .

1)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 the force given by the third right-hand rule.

true.

2)The electromotive force is a force that makes charges flow from a point of higher potential to lower potential.

false. from low to high

  • Physics -

    I have no idea on the first. THe term third right-hand rule must be unique to your text.

    On the second, it depends on what kind of charges you are discussing: positive, or negative. Wouldn't that matter?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    1)A current-carrying conductor is kept at right angles to the direction of a magnetic field. What happens to the force acting on the wire if the strength of the magnetic field doubles?
  2. Physics

    1)When does a magnetic field induce maximum EMF in a wire moving with a constant velocity?
  3. physics

    When does a magnetic field induce maximum EMF in a wire moving with a constant velocity?
  4. Physics!!!

    When does a magnetic field induce maximum EMF in a wire moving with a constant velocity?
  5. Physics

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

    What is the direction of the force acting on a current-carrying conductor lying in a magnetic field?
  7. physics

    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. True The direction of the force on doubly ionized helium atoms (alpha particles) moving …
  8. Physics

    A proton, moving in negative y-direction in a magnetic field , experiences a force of magnitude F, acting in the negative x direction. a) What is the direction of the magnetic field producing force?
  9. physics (Right Hand Rule Question)

    A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the surface of the earth. What is the direction of the magnetic field?
  10. Physics

    I need some help with a few multiple choice quadroons that I don't understand 1.EMF is best described as a(n) a. electric force. b. energy measure. c. charge flow rate. d. potential difference. 2. Which rule is used to find the direction …

More Similar Questions