Lorentz force is given by F=q(E+v×B)=qv×B Using the right hand rule the resultant vector from v x B points upwards: F=qvBy now remember the charge is -e so F=−evBy which points downwards
Remember that the direction of conventional current is opposite of the electron flow
ok i know that but looking at the question as it is on the paper- the first finger of my left hand is pointing into the paper, my thumb is pointing right and second finger down. Since the 2nd finger points down the conventional current is downwards so the electron feel a force upwards?
ok i know that but looking at the question as it is on the paper- the first finger of my left hand is pointing into the paper, my thumb is pointing right and second finger down. Since the 2nd finger points down the conventional current is downwards so the electron feel a force upwards?
Thumb shows the direction of the force on the electrons. Second finger is current, it should point left
why should the second finger point left- the electrons don't flow that way(current)?
The electrons flow as a result of the force on them. You're asked about the force. Because of the movement of the plane, each electron is moving right. That's current to the left when you're using Fleming's LHR
The electrons flow as a result of the force on them. You're asked about the force. Because of the movement of the plane, each electron is moving right. That's current to the left when you're using Fleming's LHR
the first finger (magnetic field, as shown by the X's and the arrow pointing right) should point right. the thumb (force) is then pointing upwards, the correct answer