Question

One of the following is incorrect; which one?

A. Electricity can be produced from a changing magnetic field

B. Magnetic fields can be produced using electric currents running in a coil

C. A charged particle at rest with respect to a magnetic field experiences no magnetic force

D. A charged particle at rest in an electric field experiences no electrostatic force

Answer 1

Option D is incorrect .

The electrostatic force experienced by charged particle placed in an electric field is given by

F = q​​​​​​E​​​​​​​​​  

Here q = charge of the particle , E = electric field

From the above expression , it's clear that force completely depends on electric field not a velocity.Thus it doesn't matter , whether the particle is in motion or at rest , it will experience force whose magnitude is determined by the expression given above.