estion 7 Convert the three Y-connected resistors, 20, 10, and 5 ohms to three A-connected resistors Ra, Rb, and Rc. To assi below has both the Y-connected resistors and the A-connected resistors. yet wered 28 Q ked out of ag R. tion 20 10 0 >50 105 Q 2 A Select one: O a. Ra=35, Rb=70 and Rc=17.5 O b. Ra=17.5. Rb335 and Rc=70 C. Ra=70, Rb=35 and Rc=17.5 O d. Ra=35, Rb3175 and Rc=70

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KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.