What is Resistance?

Resistance refers to the ability to oppose or withstand something, such as an external force or influence. It can also be used to describe the behaviour of opposing or resisting.

Resistance is a term used in physics to describe how much an item or substance obstructs the flow of heat or electricity. In this context, it is often symbolized by the letter “R” and is measured in units of ohms (Ω).

In biology, resistance refers to the ability of an organism or population to withstand or recover from a disease or other harmful condition. In this context, it can be influenced by factors such as genetics, diet, and the presence of immune defences.

In social and political contexts, resistance can refer to the act of opposing or challenging authority, rules, or norms. It can take many forms, such as protests, civil disobedience, or other forms of activism.

Resistance can be computed as a number using the circuit’s voltage and current.

Voltage/current equals resistance.

Ohm’s Law is the name of this equation. The resistance value will drop as the current—the denominator—increases if the voltage is kept constant. On the other hand, when the current declines, the resistance value will rise. To put it another way, resistance is low in circuits with high currents and high in circuits with low currents.

The kind, temperature, and length of the material through which the electricity is flowing, in general, all affect resistance. Due to their low electrical resistance, metals generally conduct electricity more easily than other materials. The electrical resistance of different metals increases in the following order: silver, copper, gold, aluminium, and iron. Additionally, resistance increases with temperature, whereas it decreases with temperature.