Let E→ and B→ denote the electric and magnetic fields in a certain region of space. A proton moving with a velocity along a straight line enters the region and is found to pass through it undeflected. Indicate which of the following statements are consistent with the observations:

Question

Let E→ and B→ denote the electric and magnetic fields in a certain region of space. A proton moving with a velocity along a straight line enters the region and is found to pass through it undeflected. Indicate which of the following statements are consistent with the observations:

Infinity Learn · Accepted Answer

If a charge particle experiences no electromagnetic force, then electric field must be zero (as$$ F→$$=qE$$→$$). The magnetic field may or may not be zero as a charge particle at rest or moving in the direction of magnetic field experiences no force.(a) When both E→ and B→ are $$0$$, it is undeflected.(b) If E→ is $$non-zero$$ and $$B=0$$, it will move in the direction of E and remains undeflected.(c) E→ is $$non-zero$$, force will be in direction of E. B is $$non-zero$$ and V is parallel to B→.(d) F→$$=qv$$→×B→ will not be zero due to B→ and proton will not move in the direction of E→ because of F→.

Let $\vec{E}$ and $\vec{B}$ denote the electric and magnetic fields in a certain region of space. A proton moving with a velocity along a straight line enters the region and is found to pass through it undeflected. Indicate which of the following statements are consistent with the observations:

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material