JEE Main2013PhysicsElectromagnetic InductionActual
A metal sample carrying a current along X- axis with density J _ x is subjected to a magnetic field B _z (along z- axis). The electric field E _ y developed along Y -axis is directly proportional to J _ x as well as B _ z . The constant of proportionality has SI unit.
Options
- Am^2 A
- Bm^3 A s
- Cm^2 A s
- DA s m^3
Correct answer
B. m^3 A s
Step-by-step solution
According to question E _ y J _ x B _ Z Constant of proportionality K = E _ y B _ Z J _ x = C J _ x = m ^3 As [ . As E B =C (speed of light) and .J= I Area ]