If a chraged particle at rest experiences no electromagnetic force,
(i) the electric field must be zero
(ii) the magnetic field must be zero
(iii) the electric field may or may not be zero
(iv) the magnetic field may or may not be zero

If a charge particle kept at rest experiences an electromagnetic force, (i) the electric field must not be zero (ii) the magnetic field must not be zero (iii) the electric field may or may not be zero (iv) the magnetic field may or may not be zero

If a charged particle at rest experiences no electromagnetic force, then The electric field must be zero

If a charged particle at rest experiences no electromagnetic force, then The electric field must be zero

If a charged particle at rest experiences no electromagnetic force, then electric field in that region

If a charged particle at rest experiences no electromagnetic force, then electric field in that region

If a charged particle at rest experiences no electromagnetic force, then electric field in that region

A He^(2+) at rest experiences an electromagnetic force. Then (where E is electric field and is B magnetic field)

A He^(2+) at rest experiences an electromagnetic force. Then (where E is electric field and is B magnetic field)

Can the electric potential be zero when the electric field is not zero ?

The values of i so that magnetic field at R is zero