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If resistance comes in between effort and fulcrum then such levers are called 2nd order levers

If effort is between resistance and fulcrum such levers are called 3rd order levers.

Class A fires are ordinary combustibles: wood, paper, plastic, those types of things we expect normally to be combustible and burn.

Class B fires are now flammable and combustible liquids and flammable gases, and so some suppression systems work to extinguish Class B type fires. We see a lot of Class B hazards in manufacturing and industrial, not normal types of spaces where we’d see Class A fires.

Class C fires can occur in a lot of different places, usually around electrical equipment. A Class C fire is a fire that’s electrically enhanced, or sometimes I say an electrically commutated fire. There’s an arc, some sort of short or arc due to a malfunction in some electrical equipment, but that’s a sustained arc. That arc is an ignition source, so any combustible materials around it have that sustained ignition source, and therefore Class C fires are typically harder to extinguish.

Class D fires are something that we don’t talk about a lot. They’re not that common. Class D fires are fires that occur in combustible metals

carbon dioxide is used in electric source fire

The full form of CFC is Chlorofluorocarbon.
Any of the numerous halocarbon compounds made from carbon, hydrogen, chlorine, and fluorine are called chlorofluorocarbon.
Chlorofluorocarbons (CFC) are responsible for the depletion of the Ozone layer.
The Ozone Layer helps keep out harmful UV rays that can otherwise cause skin cancer in humans and burn plants.

A class 1 lever has the fulcrum in between the effort and load
The movement of the load is present in the opposite direction of the movement that occurs because of the effort.
This is the most common configuration of a lever.

Levers are classified on the basis of the relative positions of load, effort and fulcrum.
There are 3 types of this structure, namely that-class lever, second class and third-class lever.
They are classified according to the fulcrum, the force and the load.
The main use of levers is mechanical advantage which is defined as the quantity a special machine multiplies a force applied.

The distance between the center of the front wheel is called wheel track.

Kirchhoff’s second law states, “The algebraic sum of the potential differences in a circuit loop must be zero”. … That is to say the voltage supplied is equal to the voltage consumed. So, the energy supplied is equal to the energy consumed. Hence the law of conservation of energy.

The main applications of Ohm’s law are:

To determine the voltage, resistance or current of an electric circuit.
Ohm’s law is used to maintain the desired voltage drop across the electronic components.
Ohm’s law is also used in DC ammeter and other DC shunts to divert the current
Ohm’s law is also not applicable to non ? linear elements. Non-linear elements are those which do not have current exactly proportional to the applied voltage that means the resistance value of those elements changes for different values of voltage and current.

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