What is the purpose of a transformer? transformers adjust overall circuit resistance. transformers change the frequency of an oscillating current. transformers change the voltage in a circuit. transformers store charge.

Transformers change the voltage in a circuit.

Explanation:

A transformer is an electrical device that changes electrical signal (voltage or current) from one level to another. Voltage transformer is an electrical device that changes alternating current (ac) voltage at one voltage level to another voltage level through the action of electromagnetic induction(Faraday's Principle). A transformer consists of two or more coils of wire wrapped around a common ferromagnetic  core. These coils are (usually) not directly connected. The only connection between the coils is the common magnetic flux present within the core. There are two major classes of transformers. Step-Up Transformer and Step-Down Transformers. Step-Up transformers are designed to increase ac voltage level while Step-Down transformers are designed to reduce ac voltage level.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force