Question

1 V/m= _______

(a) 1N/C

(b) 3*10^10 N/C

(c) 10^7 N/C

(d) 10^10 N/C

I got this question during an interview for a job.

This interesting question is from Electrostatic Potential topic in chapter Electrostatic Potential and Capacitance of Physics – Class 12

Answer 1

The correct option is (a) 1N/C

For explanation I would say: From the definition, we know that electric field E=\(\frac {-dv}{dx}\). Therefore V/m is the unit of electric field intensity. 1 V/m means the amount of electric field in which if we move a unit positive charge by 1 m, the work done will be 1N. Therefore, the electric field will be 1N/C.