With reference to Giant Magnetoresistance (GMR) consider the following statements:1. Magnetoresistance is the tendency of a material to change the value of its magnetic resistance.2. GMR is used in hard disk drives.Select the correct answer form the code given below:

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Q. With reference to Giant Magnetoresistance (GMR) consider the following statements::
1.Magnetoresistance is the tendency of a material to change the value of its magnetic resistance.
2.GMR is used in hard disk drives.
Select the correct answer form the code given below:

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: B

Notes:

Explanation –

Statement 1 is incorrect. Magnetoresistance is the tendency of a material to change the value of its electrical resistance in an externally-applied magnetic field.

Statement 2 is correct. GMR is used in hard disk drives, magneto resistive RAM in computers, biosensors, automotive sensors, microelectromechanical systems, and medical imagers.

Source: ForumIAS

Q. With reference to Giant Magnetoresistance (GMR) consider the following statements::1.Magnetoresistance is the tendency of a material to change the value of its magnetic resistance.2.GMR is used in hard disk drives.Select the correct answer form the code given below:

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Q. With reference to Giant Magnetoresistance (GMR) consider the following statements::
1.Magnetoresistance is the tendency of a material to change the value of its magnetic resistance.
2.GMR is used in hard disk drives.
Select the correct answer form the code given below: