Resistance is the ability to oppose or withhold an action. Resistance can be human or environmental. Resistance is an important concept in occupational health and safety because it can lead to safer working conditions. Pests and diseases can become resistant to drugs or chemicals. In the workplace, resistance may arise as workers demonstrate a lack of compliance with safety measures.
Resistance
Resistance is the property of any substance that prevents the flow of electric current through it. It is measured in ohms, which is the Greek letter Omega. All materials contain some resistance, unless they are superconductors, which have zero resistance. However, most materials fall into one of two types: conductors and insulators. Conductors allow the flow of electrons, while insulators greatly slow it down.
All materials change in resistance as their temperature increases, but the effect is different for different materials. For example, pure metals have a large increase in resistance when the temperature is increased, while alloys have a small increase in resistance with temperature. The resistance of an alloy varies according to its composition. While the resistance of a metal increases with temperature, the effect of temperature on an alloy is inconsistent and negative.
The electrical resistance of an object is measured in ohms, a unit that varies according to the current flow and applied voltage. An object’s resistance can be measured directly across or calculated by subtracting the voltages from a reference point. Direct measurement is usually simpler and more accurate than indirect measurement because it does not depend on the amount of current flowing through the object. However, problems with AC voltage or phase can occur when measuring resistance directly.
In the physical world, resistance varies depending on the material and shape of the object. For example, a long, narrow tube will have a higher resistance than a short, wide one. The shape of a wire will also affect its resistance. Copper is less resistant than tungsten, and hence less suitable as a filament for an incandescent light bulb. Another example of electrical resistance is found in central processing units, which convert electrical energy into heat.
Ohm’s law
Ohm’s law describes the relationship between voltage and resistance. In other words, the higher the resistance, the higher the voltage. A pure metal, for example, obeys Ohm’s law at constant temperature. But if the temperature is increased, the resistance increases. In this case, a constant-temperature bath is not needed to measure the resistance.
Ohm’s law is a straightforward rule that describes how electricity flows through a conductor. It shows that the current flowing through a conductor is directly proportional to the difference in potential, and that a current of one amp produces a potential difference of one volt. This law was named for the scientist Georg Ohm, and it is a fundamental electrical engineering principle.
The area of the cross-section of a conductor increases as the flow of electrons encounters the positive nuclei of a metal. As a result, the resistance is higher than that of the same conductor of the same length and area. The coefficient of resistance of a conductor is called the coefficient of resistance, or r. The resistivity of a conductor is measured in ohms. A lamp’s resistance may be as high as 20 ohms, while a copper wire is likely to be less than one ohm.
Ohm’s law was published in 1831, but was initially not well received by scientists. Professor Dave, who was studying Ohm’s research, referred to it as a “naked web of fancies.” But eventually, researchers realized the law was useful. In 1841, Ohm was awarded the Copley Medal and his work was recognized by the scientific community. His name was even given to the Ohm electrical resistance unit.
Measurement
When measuring the resistance of a circuit, it is vital to make sure that you measure the actual resistance of the component. The resistance of the lead connection is also included in the measurement. A high resistance lead will lead to inaccurate readings. Therefore, it is essential to use a high-quality ohmmeter that can measure the actual resistance of the component.
Historically, there have been a number of different units used for measuring resistance. The ohm is the standard unit of electrical resistance in the SI, symbolized by the letter “O.” It was named after the German physicist Georg Ohm. Before the ohm was chosen as the SI unit for electrical resistance, various empirically derived standard units were created in connection with early telegraphy. Ultimately, the British Association for the Advancement of Science proposed the ohm unit in 1861.
A common way to measure resistance is to measure the voltage across the resistor. Then, using the voltage drop across the resistance, you can calculate the total resistance of the resistor. This is the simplest method, but it only works if you have a resistor that is isolated and isn’t connected to any other components.
The other common method is to use an ohmmeter. This device is very convenient and accurate and can be used to measure low resistances. This is especially useful if you need a quick reading but don’t want to spend a lot of time adjusting the ohmmeter.
Causes
When implementing change, it’s essential to consider the motivations of the people who will be impacted. Organizations may encounter resistance to change because employees don’t feel included in the decision-making process or are fearful of the unknown. However, these emotions are part of the human condition and must not be suppressed. By addressing these concerns and creating safe communication channels, organizations can counteract change resistance.
Managing assets and employees during organizational change can be challenging, but with the right tools, engaging employees can be easier. Software that helps automate processes, provide guidance, and empower employees to help themselves can streamline management time and improve employee engagement. It’s important to remember, though, that each organization has unique power structures, routines, and beliefs. As such, organizational resistance can vary widely from one organization to another. It’s also important to recognize that the motivations of frontline employees may be different from those of managers and leaders.
Resistance to change can manifest in different forms, from simple reluctance to organized protest. People often resist change because they perceive it as a threat to their existing way of life. However, sometimes they are simply resistant to new ideas or processes. A common cause of resistance is that employees recognize a new process as weak and aren’t given adequate information about it.
Infections caused by bacteria that are resistant to antibiotics are a serious problem. Not only do these infections increase medical costs, but they also cause increased mortality. Therefore, it is essential to change the way we use antibiotics. Without this change, resistance will continue to grow. Infection prevention and vaccines should be implemented to reduce the need for antibiotics.
Symbol
If you are in a crossword puzzle, you have probably come across the clue Symbol of resistance. The symbol is composed of two parallel lines intersected by a thin vertical line. It symbolizes physical and spiritual endurance and supports persistence. This symbol can be easily added to your design, diagram, or presentation.
There are two basic types of resistors: a fixed and a variable resistor. Both have the same shape, but their resistance values vary. The former is used for small resistance values, while the latter is used for large resistance values. Each of these types can be represented by a different symbol.
One type of resistor is called a thermistor. Its resistance is controlled by the external environment temperature. Its text symbol is RT. This type of resistor can be further categorized into two types: NTC and PTC. The former is characterized by its decreasing resistance with increasing temperature while the latter has an increasing resistance with increasing temperature.
Electrical resistance is measured in ohms, a unit of electrical resistance. The unit is named after German physicist Georg Simon Ohm (1784-1854), who discovered the concept of resistance and its relation to voltage. The resistance of an electrical circuit depends on two types of materials: the conductor and the insulator. A conductor provides low resistance, allowing electrons to flow freely, while an insulator offers high resistance, restricting the flow of electrons. Typically, resistance measurements are made to determine the condition of a circuit or component.
Examples
Resistance to a certain ideology or social practice has many manifestations. For instance, it can be an act of defiance against a state’s authority. Another example of resistance is a social movement, such as the LGBT rights movement. It can also be an attempt to change a cultural norm. Resistance may occur on a small or large scale.
Resistance is an important part of the science of conflict and violence. It is used to study popular opposition to governments and occupying powers. There is a spectrum of resistance activities, ranging from peaceful legal activities to mass upheavals and civil wars. It is important to distinguish between militarized resistance movements and nonviolent movements. Resistance is often the result of latent dissatisfaction in the human heart. When these dissatisfactions are expressed in a collective way, the science of resistance takes on added relevance.
In organizational settings, resistance to change can pose a real threat to the success of the organization. Not only does it slow down the adoption of innovation, it affects employee morale, the quality of work and interpersonal communication. As a result, it can erode the relationships within the work environment. Some signs of resistance to change include missed meetings, late assignments and forgotten commitments.
In psychotherapy, resistance is a common occurrence, and therapists have been trained to handle it. They also have strategies to deal with it. Whether a client has a habit of skipping appointments or avoiding small talk, the therapist should be aware of such behaviors.
