Question: What Does Resistance Mean?

What does resistance mean in medical terms?

Resistance: Opposition to something, or the ability to withstand something.

For example, some forms of the staphylococcus bacterium are resistant to treatment with antibiotics..

How do I calculate resistance?

If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.

How would you explain antibiotic resistance?

Antibiotic resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. That means the germs are not killed and continue to grow. Infections caused by antibiotic-resistant germs are difficult, and sometimes impossible, to treat.

What are two types of resistance?

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

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 happens if resistance is too high?

If resistance is too high, current will be low if voltage is okay. NOTE: When the voltage stays the same, such as in an Automotive Circuit… current goes up as resistance goes down, and current goes down as resistance goes up. Bypassed devices reduce resistance, causing high current.

What is resistance easy definition?

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 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 another word for resistant?

In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for resistant, like: contrary, tight, unsusceptible, defiant, unyielding, immune, repellent, opposing, rebellious, insusceptible and renitent.

What causes antibiotic resistance?

Antibiotic resistance occurs when bacteria change in response to the use of these medicines. Bacteria, not humans or animals, become antibiotic-resistant. These bacteria may infect humans and animals, and the infections they cause are harder to treat than those caused by non-resistant bacteria.

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 are the 4 factors that 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.

Why is resistance directly proportional to length?

As the length increases, the number of collisions by the moving free electrons with the fixed positive ions increases as more number of fixed positive ions are present in an increased length of the conductor. As a result, resistance increases.

What is the resistance of a human body?

The “total body resistance” of the person is composed of the very low (approximately 300 Ω) internal body resistance plus the 2 skin contact resistances. The skin contact resistance will usually be between 1000 and 100,000 Ω, depending on contact area, moisture, condition of the skin, and other factors.

What is an example of resistance?

Resistance is defined as a refusal to give in or to something that slows down or prevents something. An example of resistance is a child fighting against her kidnapper. An example of resistance is wind against the wings of a plane.

What does resistant mean?

Being resistant means to be immune or impervious to something. A vest that’s resistant to bullets is bullet-proof. Anything resistant has a certain power — specifically, the power to resist or fight off — something else.

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. …

How do you use resistant in a sentence?

Examples of resistant in a Sentence Adjective These plants are resistant to cold temperatures. He became resistant to the medication. These example sentences are selected automatically from various online news sources to reflect current usage of the word ‘resistant.

What is the use 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 are examples of resistance exercises?

Examples of resistance training free weights – classic strength training tools such as dumbbells, barbells and kettlebells. medicine balls or sand bags – weighted balls or bags. weight machines – devices that have adjustable seats with handles attached either to weights or hydraulics.

How is resistance used in everyday life?

Resistors are present everywhere in our life. All electronic boards and devices utilize them. Our laptop boards, mobile phone, juicer machine circuits, home accessories all contain SMD resistors. They are used in kettles, lamps, geezers, speakers, headphones and almost all electronic/electrical devices.