Why are inverters necessary for use with photovoltaic cells connected to the grid? Can solar electricity from photovoltaic cells be used without using an inverter?

What will be an ideal response?


Photovoltaic cells produce direct current, while the electrical distribution system
uses alternating current. In order to make direct current into alternating current, inverters
must be used.

Physics & Space Science

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Why is the core hot?

A. from both the decay of radioactive atoms and the leftover heat B. from heat left over from the planet's birth C. The high pressure in the core drives the temperature higher. D. from the steady decay of radioactive atoms in the rock E. None of these choices are correct.

Physics & Space Science

Suppose you know the frequency of a photon and the speed of light. What else can you determine about the photon?

A) its temperature B) the chemical composition of the object that emitted it C) its wavelength and energy D) its acceleration

Physics & Space Science

The ________ seismic waves can pass through both solid and liquid portions of the Earth's interior, and be detected on the other side of the globe

Fill in the blank(s) with correct word

Physics & Space Science

Find the net work done by friction on a box that moves in a complete circle of radius on a uniform horizontal floor. The coefficient of kinetic friction between the floor and the box is 0.25, and the box weighs 65N

A) 190 J B) 0 J C) 1,800 J D) 370 J

Physics & Space Science