Resistance Definition Science

October 23, 2024 Post a Comment

Resistance definition science

Resistance is the opposition that a substance offers to the flow of electric current. It is represented by the uppercase letter R.

What is the actual definition of resistance?

the act of fighting against something that is attacking you, or refusing to accept something: resistance to disease. Government troops offered no resistance (to the rebels).

What is the definition of resistance in science for kids?

Resistance - Resistance measures how well a material or object conducts electricity. Low resistance means the object conducts electricity well, high resistance means the object does not conduct electricity well.

What is resistance and example?

Resistance refers to the amount that an object impedes or resists in an electric current. Electric current refers to the flow of electrons. An easier way to explain resistance is to consider an example of a person in a crowded market struggling to go from one shop to another.

What causes resistance?

An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.

What is a sentence for resistance?

Noun They have shown a stubborn resistance to change. The troops met heavy resistance as they approached the city. The paint shows good weather resistance. Over time the patient could develop a resistance to the drug.

What is resistor short answer?

A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.

How do you measure resistance?

Resistance is measured using an instrument such as an analog multimeter or digital multimeter. Both types of instrument can measure not only resistance, but also current, voltage, and other parameters, so they can be used in a variety of situations.

What causes resistance in the water?

Water resistance happens because of the particles in water or the fluid. As the object moved through it collides with the particles which try to slow it down.

What is resistance in friction?

Friction is the resistance of motion when one object rubs against another. Anytime two objects rub against each other, they cause friction. Friction works against the motion and acts in the opposite direction.

What causes air resistance?

What Causes Air Resistance? Also known as 'drag,' air resistance is a force caused by air. The air particles hit the front of an object, causing it to slow down. The greater the surface area, the greater the number of air particles hit the object and the greater the overall resistance.

What are examples of forms of resistance?

Passive change resistance. The behaviour: individuals remain silent about their views or appear to agree to changes, but then do not act on them.
Active change resistance. ...
Attachment change resistance. ...
Uncertainty change resistance. ...
Overload change resistance.

What is an example of resistance force?

Resistive Forces These include: Friction which is a force that prevents, or tries to prevent, the slipping or sliding of two surfaces in contact. Air Resistance which acts in the opposite direction to the motion.

What is the unit of resistance?

The unit of the electrical resistance, measured with direct current, is the ohm (abbreviated Ω), named after the German physicist and mathematician Georg Simon Ohm (1789-1854). According to ohm's law, the resistance R is the ratio of the voltage U across a conductor and the current I flowing through it: R = U / I.

What can affect resistance?

There are 4 different factors which affect resistance:

The type of material of which the resistor is made.
The length of the resistor.
The thickness of the resistor.
The temperature of the conductor.

What causes resistance to change?

What are the top causes of resistance to change?

Mistrust and lack of confidence.
Emotional responses.
Fear of failure.
Poor communication.
Unrealistic timelines.

What makes resistance increase?

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. See resistivity. The resistance of a conductor, or circuit element, generally increases with increasing temperature.

What does no resistance mean?

Resistance, symbolized by the (Ω) symbol and measured in Ohms, is a measurement of how well a current can travel through a circuit or a given path. A circuit with no resistance (0) would indicate a complete circuit, or one that has no short.

What is the synonym of resistant?

synonyms for resistant

contrary.
defiant.
disobedient.
opposing.
rebellious.
unyielding.

What is meant by resistance class 10?

Resistance is defined as the property of the conductor which opposes the flow of electric current. It is also defined as the ratio of the voltage applied to the electric current flowing through it.