C-11-Q101easysingle_mcqশ্রেণি সমবায়ে তুল্য রোধ কত?aR=R1+R2+R3R = R_1 + R_2 + R_3R=R1+R2+R3b1/R=1/R1+1/R21/R = 1/R_1 + 1/R_21/R=1/R1+1/R2cR=R1⋅R2R = R_1 \cdot R_2R=R1⋅R2dR=R1−R2R = R_1 - R_2R=R1−R2