Question

Which of the following will not be true in the case of a wire wound resistor?
A. it has a lower order of stability and reliability.
B. it may have a high power rating with a low tolerance value.
C. will be very easy to make wire wound resistors of value $0.01\Omega $.
D. it is not suitable for high frequency circuits.

Answer 1

Hint: A wire wound resistor is defined as an electrical passive component which functions to limit the current. The resistive element will be existing out of a metallic wire which is being insulated and also winded around a core of a non-conductive material. This will help you in answering this question.

Complete answer:
The wire material used for making a wire wound resistor will be having a high resistivity, and can be usually produced of an alloy such as the Nickel-chromium abbreviated as Nichrome otherwise a copper-nickel-manganese alloy known as Manganin. Common core materials have been made of ceramic, plastic and glass. We can easily make a wire wound resistor with a value $0.01\Omega $. It is having a high power rating with a low tolerance value. And also it cannot be used for high frequency circuits. It is not having a lower order of stability and reliability. This is not true for wire wound resistors given in the options.

Therefore the correct answer has been given as option A.

Note:
The wire wound resistor is having a great use in high power resistor applications. It is also having some other uses where its characteristics of low noise and power dissipation are required. The wire wound resistor can be used in a great variety of applications and in specific like a power resistor where a larger amount of power is required to be dissipated.