Let 
and 
denote electric and magnetic fields in a frame S. 
and 
in another frame S’ moving with respect to S at a velocity 
Two of the following equations are wrong. Identify them.
Formula used:
Electric force is given by 
Where F is electric force
q is electric charge =
E is electric field
Magnetic force is given by 
Where F is magnetic force
q is electric charge =
v is velocity
B is magnetic force
From the above formulas 
and 
From the dimensional analysis we can write equations as
i. 
ii. 
So only options A and D are correct.
1