Question 4 0 / 1 pts What does Doc Physics do to "define" a current? He labels magnitude and direction. O He labels magnitude only. He labels direction only.Question 3 How does this relate to the gravitational analog of potential? If I come back to where I started, my elevation gain plus elevation loss must equal zero. If I come back to where I started, my energy gain plus energy loss must equal zero. If I come back to where I started, my current gain plus current loss must equal zero. Question 1 0 / 1 pts Kirchhoff's Junction Rule is simply a statement of the conservation of O charge energy potential work