Equipotential lines in a source are circles

Equipotential lines are the lines that connect the points having the same potential. The potential difference between any two points on an equipotential line is zero. In a source, the equipotential lines are circles. This statement can be understood by considering the concept of electric field and potential.

Electric Field

An electric field is a region of space around a charged object where the force of the electric field on a test charge can be measured. The electric field is a vector field, which means that it has both magnitude and direction. The direction of the electric field is the direction in which a positive charge would move if placed in the field.

Potential

The electric potential at a point is a scalar quantity that describes the amount of work that would be done per unit charge if a positive test charge were moved from infinity to that point. The potential is measured in volts and is defined as the ratio of the work done to the test charge.

Equipotential Lines

Equipotential lines are the lines that connect the points having the same potential. The potential difference between any two points on an equipotential line is zero. Equipotential lines are always perpendicular to the electric field lines.

Equipotential Lines in a Source

In a source, the equipotential lines are circles. This can be understood by considering the electric field lines around a point charge. The electric field lines around a point charge are radial, which means that they all originate from the point charge and extend outward in all directions. The electric field lines are always perpendicular to the equipotential lines.

The equipotential lines are circles because the electric field lines are radial. The electric field lines originate from the point charge, and the equipotential lines are always perpendicular to the electric field lines. Therefore, the equipotential lines are circles centered at the point charge.

In conclusion, the statement that in a source, equipotential lines are circles is true. This can be understood by considering the electric field lines around a point charge, which are radial, and the fact that the equipotential lines are always perpendicular to the electric field lines.