Position indicator including control circuit that causes electrode to switch from being connected to alternating potential to being connected to fixed potential in response to determining that pen pressure is detected

A position indicator that electrostatically interacts with a sensor, the position indicator comprising:

• a casing having a pen shape;
• a conductive core body including a pen tip that protrudes from an opening on one end in an axial direction of the casing;
• a conductor surrounding the conductive core body;
• a signal transmitting circuit which, in operation, generates a signal that electrostatically interacts with the sensor, and supplies the generated signal to the core body;
• and
• a control circuit which, in operation, produces different electrostatic interactions with the sensor by performing a first control operation that sets the conductor surrounding the core body in a state of being grounded while the signal is sent out from the pen tip of the core body to the sensor, and performing a second control operation that sets the conductor surrounding the core body in a state different from the state of being grounded.