In a certain region static electric and magnetic fields exist. The magnetic field is given by … . If a test charge moving with a velocity … experiences no force in that region, then the electric field in the region, in SI units, is :

Option D. Here test charge experience no net force, So, sum of electric and magnetic field is zero.

Magnetics

JEE Main 2017 · 8 Apr, Morning shift · Q7741

PhysicsMedium116×since 2002Q7741

In a certain region static electric and magnetic fields exist. The magnetic field is given by

\overrightarrow B = {B_0}\left( {\widehat i + 2\widehat j - 4\widehat k} \right)

. If a test charge moving with a velocity

\overrightarrow \upsilon = {\upsilon _0}\left( {3\widehat i - \widehat j + 2\widehat k} \right)

experiences no force in that region, then the electric field in the region, in SI units, is :

Magnetics — JEE Main 2017 · 8 Apr, Morning shift · Q7741 · Alror

JEE Main 2017 · 8 Apr, Morning shift · Q7741

PhysicsMedium116×since 2002Q7741

In a certain region static electric and magnetic fields exist. The magnetic field is given by

\overrightarrow B = {B_0}\left( {\widehat i + 2\widehat j - 4\widehat k} \right)

. If a test charge moving with a velocity

\overrightarrow \upsilon = {\upsilon _0}\left( {3\widehat i - \widehat j + 2\widehat k} \right)

experiences no force in that region, then the electric field in the region, in SI units, is :