In the given figure \( R_1 = 10 \, \Omega \), \( R_2 = 8 \, \Omega \), \( R_3 = 4 \, \Omega \) and \( R_4 = 8 \, \Omega \). Battery is ideal with emf \( 12 \, \text{V} \). Equivalent resistant of the circuit and current supplied by battery are respectively:
