Kirchhoff's loop rule:

$\overline{){\mathbf{\Sigma}}{\mathbf{V}}{\mathbf{=}}{\mathbf{0}}}$

But:

$\overline{){\mathbf{V}}{\mathbf{=}}{\mathbf{i}}{\mathbf{R}}}$

**Part A**

No current flows in the middle wire because it is not connected.

The current outside the loop can be taken to be i in a counterclockwise direction.

**Part A. **Find the potential of point *a* with respect to point *b *in the figure. Express your answer using two significant figures.

**Part B. **If points *a* and *b* are connected by a wire with negligible resistance, find the magnitude of the current in the 10.0 V battery. Express your answer using two significant figures. Express your answer using two significant figures.

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