A load of 7 ohms was connected to a 15V battery. The current draws was 2.1005 amps. What is the internal resistance of the battery? a.1.4 ohms b.0.14 ohm c.0.19 ohm d.2.0 ohms show complete solution please, thank

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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.