Question

A charge particle moves underacted in a region of crossed electric and magnetic fields. If the electric field is switched off, the particle has an initial acceleration $a$, if the magnetic field is switched off, instead of the electric field, the particle will have an initial acceleration:

• A. equal to $0$
• B. $>a$
• C. equal to $a$
• D. $<a$

Answer 1

The correct option is C equal to $a$

A charge particle moves underacted in a region of crossed electric and magnetic fields. If the electric field is switched off, the particle has an initial acceleration aa, if the magnetic field is switched off, instead of the electric field, the particle will have an initial acceleration: is equal to $\alpha$

so that option is C.