Once i have entered text into a presentation, how do i modify the font style of the text? select the text and use options available on the format text tab. fonts cannot be modified in the powerpoint application. select the text and use the format options available on the home tab. delete the text and retype it after you have selected the appropriate format.

Select the text and use options available on the Format Text.

The Microsoft Office package offers a variety of options and is a very powerful tool for text modification. Among these tools is also Powerpoint (if you're talking about PowerPoint). All of them in any case make available text modification and Text formatting. 

Power law is P = I * V. With 1200 Watts of power, just divide by the 120 voltage to get 10 amperes of current.