# Physics

posted by
**Art**
.

How do I use Kirchhoff's First Law -- the law of conservation of energy and the law of conservation of charge to prove the equivalent resistance formula.

Rt = R1 + R2 + R3 ......

posted by
**Art**
.

How do I use Kirchhoff's First Law -- the law of conservation of energy and the law of conservation of charge to prove the equivalent resistance formula.

Rt = R1 + R2 + R3 ......