Question: What Is An Example Of Resistance?

What is resistance and its types?

Most types of resistor are linear devices that produce a voltage drop across themselves when an electrical current flows through them because they obey Ohm’s Law, and different values of resistance produces different values of current or voltage.


What is resistance and its unit?

Siemens per meterElectrical conductivityOhm meterElectrical resistivityElectrical resistance/SI units

How do I measure resistance?

Set your multimeter to the highest resistance range available. The resistance function is usually denoted by the unit symbol for resistance: the Greek letter omega (Ω), or sometimes by the word “ohms.” Touch the two test probes of your meter together. When you do, the meter should register 0 ohms of resistance.

What is difference between resistance and resistivity?

Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons. Resistivity is the physical property of a particular substance which is having particular dimensions. … Resistivity is only proportional to the nature and temperature of the particular material.

What is resistance and how does it work?

Resistance is the hindrance to the flow of electrons in material. While a potential difference across the conductor encourages the flow of electrons, resistance discourages it. The rate at which charge flows between two terminals is a combination of these two factors.

What is an example of resistance in biology?

Two examples of biological phenomena that are often claimed to provide examples of “evolution in action” are antibiotic resistance and warfarin resistance. Antibiotics are chemicals that can prevent bacterial growth or kill bacteria. They work through several different means.

What is the working of resistance?

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

What is a sentence for resistance?

Examples of resistance in a Sentence Noun They have shown a stubborn resistance to change. The troops met heavy resistance as they approached the city.

What are examples of antibiotic resistance?

Examples of bacteria that are resistant to antibiotics include methicillin-resistant Staphylococcus aureus (MRSA), penicillin-resistant Enterococcus, and multidrug-resistant Mycobacterium tuberculosis (MDR-TB), which is resistant to two tuberculosis drugs, isoniazid and rifampicin.

What is resistance medical term?

Resistance: Opposition to something, or the ability to withstand something. For example, some forms of the staphylococcus bacterium are resistant to treatment with antibiotics.

What is resistance in medicine?

Drug resistance is the reduction in effectiveness of a medication such as an antimicrobial or an antineoplastic in treating a disease or condition. The term is used in the context of resistance that pathogens or cancers have “acquired”, that is, resistance has evolved.

Which is the best definition of resistance?

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). … Insulators: Materials that present high resistance and restrict the flow of electrons.

What is resistance and its formula?

Ohm’s law: an empirical relation stating that the current I is proportional to the potential difference V, ∝ V; it is often written as I = V/R, where R is the resistance resistance: the electric property that impedes current; for ohmic materials, it is the ratio of voltage to current, R = V/I ohm: the unit of …

What’s a sentence for resistance?

Resistance sentence examples. Any resistance she might have mustered melted at his words. Whatever resistance she had evaporated in the intensity of his desire for her. He also investigated electrical endosmosis and the electrical resistance of electrolytes.

What is the importance of resistance?

Resistance causes some of the electrical energy to turn into heat so some electrical energy is lost along the way. However, it is resistance that allows us to use electricity for heat and light. The heat that is generated from electric heaters or the light that we get from light bulbs is due to resistance.

What are the 4 types of resistors?

Different Types of Resistors – Fixed, Variable, Linear & Non-Linear Resistors & ApplicationsCarbon Composition Resistors.Wire wound Resistors.Thin Film Resistors.Carbon Film Resistors.Metal Film Resistors.Thick Film Resistors.Metal Oxide Resistors.Cermet Oxide Resistors (Network Resistors)More items…

Whats does resistance mean?

noun. the act or power of resisting, opposing, or withstanding. the opposition offered by one thing, force, etc., to another. Electricity. Also called ohmic resistance.

What are the causes of resistance?

The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through.

What are two types of resistance?

Resistors can be broadly of two types. Fixed Resistors and Variable Resistors.