मैक्सवेल का तीसरा समीकरण क्या है?
1
\(\nabla \times E = - \frac{{\partial B}}{{\partial t}}\)
2
\(\nabla \times E = \frac{{\partial B}}{{\partial t}}\)
3
\(\nabla \times B = - \frac{{\partial E}}{{\partial t}}\)
4
\(\nabla \times B = \frac{{\partial E}}{{\partial t}}\)