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When is resistance useful?


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2012-06-15 08:21:11
2012-06-15 08:21:11

resistance is useful when a plane is flying in the air, air resistance. it is also useful when a boat is floating on water, water resistance.

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it cuts down air resistance.

# Set the Multimeter to measure a large resistance # Connect the leads of the meter to the resistance to be measured # If the readout is below useful scale switch to measure a lower resistance # If the readout is above useful scale switch to measure a higher resistance # Disconnect the leads # Turn off the multimeter

It is useful to stop aircrafts when they land as air brakes and parachutes are used to stop the aircrafts

It can slow you down because it is a frictional force

Their task is to make the voltage flowing in a circuit drops to a desired value, depending on the resistance of the resistor.

It keeps every slight wind from becoming a hurricane and it slows down bullets. :)

A Spring is useful in "storing" energy. It is also useful to provide a "measured resistance" to counter-act an opposing force or energy. Or to determine "mass", or gravity expressed as newtons , or plain old lbs or weight. A spring can be useful in many ways. It can reduce shock to components ,vehicles and even bldg's.

Batteries are rated as ampere/hour any circuit that draws power from it effects it. The lower the internal resistance of the circuit the shorter the useful battery life as discharged.

Athletics Diving Bobsledding cycling Formula 1 and associated motor racing sports

Aluminum is useful in the aerospace industry because of its relatively high strength to weight ratio, fair corrosion resistance, and because it is generally easy to machine.

To load a circuit to a specific resistance value. This is useful in impedance matching networks, power transmission, telecommunications, etc.

Solid, unreactive, high melting point.

An example: zircaloy-2 alloy for cladding nuclear fuels elements. Advantages: resistance to corrosion, resistance to stress corrosion cracking, resistance to high pressures and temperatures, not important absoptions of thermal neutrons etc. Another example: gold alloys with copper for jewelry. Advantages: more mechanical resistance, less expensive, less erosion.

Resistance, or electrical resistanceResistance, or electrical resistanceResistance, or electrical resistanceResistance, or electrical resistance

The filament in a light bulb causes the light bulb to heat up and give off life.

Examples of useful properties: hardness, resistance to corrosion, high thermal conductivity, high electrical conductivity, ductility, maleability, high melting point, easy machining, possibilty to form alloys, insolubility in water, etc.

abrasion resistance is the resistance in abrasion

The theoretical resistance simply defines what resistance is while practical resistance refers to putting the theoretical resistance into action.

Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.

It keeps the electron flow in check. Wthout resistance, current flow, (or amperage), would be too excessive and hard to control. Think what would happen if you placed a metal wire from one post of a car battery to the other post (a direct short with no resistance). The wire would melt and overheat and also possibly damage the battery from excessive amperage flow.

Resistance can be increased by adding a resistance in series with the existing load resistance.

No, not all mutations are harmful some of them could be very useful for the indiviual or species like the aqquired resistance of some bacteria to DDT C14H9Cl5.

The laws of resistance describes the resistance of a specific material. There are a total of four laws of resistance.

Low resistance: Copper wirehigh resistance : rubber band

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