a charge is moving in a magnetic field that points to the left. what direction can the charge move and…

a charge is moving in a magnetic field that points to the left. what direction can the charge move and experience no magnetic force? check all that apply. up down left right into the screen out of the screen

a charge is moving in a magnetic field that points to the left. what direction can the charge move and experience no magnetic force? check all that apply. up down left right into the screen out of the screen

Answer

Explanation:

Step1: Recall magnetic - force formula

The magnetic force on a charged particle is given by $\vec{F}=q\vec{v}\times\vec{B}$, where $q$ is the charge, $\vec{v}$ is the velocity of the charge, and $\vec{B}$ is the magnetic - field vector. The magnitude of the force is $F = qvB\sin\theta$, where $\theta$ is the angle between $\vec{v}$ and $\vec{B}$. When $\sin\theta = 0$, the magnetic force $F = 0$. This occurs when $\theta=0^{\circ}$ or $\theta = 180^{\circ}$, i.e., when the velocity of the charge is parallel or anti - parallel to the magnetic field.

Step2: Analyze directions

The magnetic field points to the left. A charge moving to the left (parallel to the magnetic field) or to the right (anti - parallel to the magnetic field) will experience no magnetic force since for these cases $\theta = 0^{\circ}$ or $\theta=180^{\circ}$ respectively and $\sin\theta = 0$.

Answer:

left, right