In lab, a radiation detector was used to calculate the background radiation. The readings taken every minute were recorded in the table below. What is the reason
that the readings are not the same every minute?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell