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.
To disable Enhanced Protected Mode, follow these steps: Start Internet Explorer for the desktop. Tap or click Tools, and then tap or click Internet options. On the Advanced tab, click to clear the Enable Enhanced Protected Mode check box under Security. Tap or click OK. Note You must restart your browser for this setting to take effect.