AC is when the electrons flow in two directions, from the positive to the negative terminal and from the negative to the positive terminal, 'alternating' between the two directions. A lot of people think of electron flow as electrons moving along a wire freely like cars go down a highway.
To check the status of protected mode, choose File > Properties > Advanced > Protected Mode. Protected mode is enabled by default. To specify the settings, do the following: Choose Edit > Preferences. In the Categories list on the left, select Security (Enhanced). In the Sandbox Protections section, select or deselect Enable Protected Mode At Startup. Enable Create Protected Mode Log File to record events. The changes take effect the next time you start the application.
Configuring Protected Mode. Protected Mode can be configured in Internet Explorer's Internet Options dialog. To configure Protected Mode, click the Security tab, select a Web content zone, and then change the Enable Protected Mode check box.y default, Protected Mode is enabled for the Internet, Intranet, and Restricted Sites zones. To verify that Internet Explorer is running in Protected mode, look for the words Protected Mode: On next to the Web content zone displayed in Internet Explorer's status bar.