About the nabla operator (∇) and the nabla dot (∇·), say if it is true or false:
1 In the heart, the current has an address.
2 The equationV=r, where r is the 3D distance from the origin, is a scalar function.
3 The nabla-dot operator can be used with V if V=r.
4 Geometrically, the nabla and nabla punto operators refer to the same.
5 In electric fields, the potential function is usually a vector.
6 If the current is described as a vector function, the operator calls point is greater at points where the current originates.
7 The nabla operator can be used in V if V=r.
8 Given a vector function, one can use the nabla operator and the nabla operator point in it.