President Barack Obama (right) and James Comey (left) in the White House Rose Garden, Washington, D.C., June 21, 2013, as Obama announced Comey's nomination as FBI Director. The Director of the Federal Bureau of Investigation (FBI) is appointed by the President and, since 1972, confirmed by the Senate.
An electric bill is a bill for the consumption of electric energy.
A photocell is any of a wide range of sensors that react based on the presence of light or electromagnetic energy. They can be found in many different forms, from solar panels that use light to generate electricity, to photoresistors, which shift in resistance based on how much light is present.