Adevice that increases or decreases voltage is called a (n)
a. alternator.
b. transformer.
c. generator.
d. turbine.

Transformer.

Explanation:

A transformer is an electrical device that has the ability to transfer the electric energy between the two circuits. The energy can be transferred by without the metallic connection.

The transformer used to decrease or increase the voltage between the two circuits. Transformers are also used to couple the stage of the signal processing circuits.

Thus, the correct answer is option (B).

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.