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.
Enhanced Protected Mode. Every release of Internet Explorer includes new security enhancements to help keep you safe as you browse the Internet. The new Enhanced Protected Mode in Internet Explorer 10 helps keep your data safe even if an attacker has exploited a vulnerability in the browser or one of its add-ons. There is no single thing that can keep you secure by itself, so we pursue multiple strategies, including: