# physics (simple question...need help pls!)

The magnetic field is generated by:

A) an electron moving at constant speed in a straight line

B) a proton moving in a circle

C)a neutron moving in a circle

D) none

1. 👍 0
2. 👎 0
3. 👁 160
1. A and B are correct. Cannot you read Amperes Law, or Ampere's discovery? Moving charges (currents) generate magnetic fields. You need not post this again. Read for yourself: http://en.wikipedia.org/wiki/Magnetic_field

1. 👍 0
2. 👎 0
2. I Know, I did read it...But i am not provided with an answer choice of both. I am wondering, must the electron be moving in a straight line?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Physics

A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron?

asked by Fred on February 3, 2013
2. ### physics

A conducting bar slides without friction on two parallel horizontal rails that are 50 cm apart and connected by a wire at one end. The resistance of the bar and the rails is constant and equal to 0.10 􀌛. A uniform magnetic

3. ### physics

A 42 mT magnetic field points due west. If a proton of kinetic energy 9x10E-12 J enters this field in an upward direction, find the magnetic force acting on the proton in magnitude and direction. What magnetic force would an

asked by seanmarch58 on July 27, 2014
4. ### College physIcs

An electron travels at a speed of 4.0×104 m/s through a uniform magnetic field whose magnitude is 1.4×10−3 T. What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are

asked by Lanise on February 19, 2010
1. ### Physics

An electron experiences 1.2 x 10^-3 force when it enters the external magnetic field, B with a velocity v. What is the force experienced by the electron if the magnetic field is increased two times and the velocity is decreased to

asked by Physics fail on January 25, 2013
2. ### Physics

A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron? Thanks for

asked by fred on February 2, 2013
3. ### Physics concept question

A long straight horizontal wire carries a current I = 2.10 A to the left. A positive 1.00 C charge moves to the right at a distance 4.50 m above the wire at constant speed v = 2250 m/s. What are the magnitude and the direction of

asked by Robert on March 7, 2011
4. ### Vectors

The magnetic force (Vector FM)on a particle in a magnetic field is found by Vector FM = Vector I × Vector B, Vector I is the charge multiplied by the velocity of a charged particle and Vector B the strength of the magnetic field,

asked by Amy on February 22, 2015
1. ### physics

The drawing shows a parallel plate capacitor that is moving with a speed of 30 m/s through a 3.1 T magnetic field. The velocity vector v is perpendicular to the magnetic field. The electric field within the capacitor has a value

asked by Dee on February 26, 2014
2. ### Physics

An electron moves at a speed of 6.0 x 10^-6 perpendicular to a constant magnetic field. The path is a circle of radius 1.3 x 10^-3m. What is the magnitude of the field. Find the magnitude of the electron acceleration.

asked by Veronika on February 7, 2011
3. ### Physics

An electron experiences 1.2 x 10^-3 force when it enters the external magnetic field, B with a velocity v. What is the force experienced by the electron if the magnetic field is increased two times and the velocity is decreased to

asked by Physics fail on January 25, 2013

Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greates when: a.Plane of loop makes an angle 45 degrees with the magnetic field b.The plane of the loop is parallel to

asked by Annie on May 2, 2011