Bringing a negatively charged ebonite rod close to the cap (II): This causes the electrons in the electroscope to be repelled, leaving the top of the electroscope positively charged. Earthing the cap (III): This allows electrons from the ground to flow into the electroscope, neutralizing the positive charge. Disconnecting the earthing (IV): This isolates the electroscope while it retains the induced charge. Removing the ebonite rod (I): This stops the influence of the charged rod. Therefore, the correct sequence is: II → III → IV → I.