Understanding Cylindrical Coils: The Solenoid
The question asks to identify the component formed by winding many turns of insulated copper wire closely together in a cylindrical shape. Let's break down the description and explore the options.
Defining the Component
The specific structure described – a coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder – is the defining characteristic of a specific electrical component used extensively in physics and electrical engineering.
Analyzing the Options
- Circular coil: While the component involves circular turns, this term is too general. A single loop or a loosely wound set of turns could also be called a circular coil.
- Solenoid: A solenoid is precisely defined as a coil consisting of many tightly packed circular turns of insulated wire wound in a helical or cylindrical shape. This directly matches the question's description. When current flows through a solenoid, it generates a uniform magnetic field inside.
- Straight conductor: This is simply a wire that is not coiled or wound. It does not match the description of multiple turns.
- Toroid: A toroid is a coil that is bent into a donut or ring shape. While it is a type of coil, its shape is fundamentally different from the cylinder described in the question.
Conclusion
Based on the precise definition, a coil made of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is known as a Solenoid. This configuration is crucial for creating controlled magnetic fields in applications like electromagnets and inductors.
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Important Questions from Physics
On the basis of which principle does soap clean surfaces?
Which one of the following devices is used to measure atmospheric pressure?
Which one of the following energy is stored in the links between the atoms?
Who among the following has explained the phenomenon of photoelectric effect?
What special name is given to the frictional force exerted by a fluid?
