KCET · Physics · Magnetic Properties of Matter
Earth's magnetic field always has a horizontal component except at
- A equator
- B magnetic poles
- C a latitude of \(60^{\circ}\)
- D an altitude of \(60^{\circ}\)
Answer & Solution
Correct Answer
(B) magnetic poles
Step-by-step Solution
Detailed explanation
At poles magnetic dip, \(\delta=90^{\circ}\)
As, horizontal component of Earth's magnetic field,
\(B_{H}=B \cos \delta\)
where, \(B\) is net earth's magnetic field.
\(\Rightarrow \quad B_{H}=B \cos 90^{\circ}=0\)
So, at poles, the horizontal component of earth's magnetic field is zero.
As, horizontal component of Earth's magnetic field,
\(B_{H}=B \cos \delta\)
where, \(B\) is net earth's magnetic field.
\(\Rightarrow \quad B_{H}=B \cos 90^{\circ}=0\)
So, at poles, the horizontal component of earth's magnetic field is zero.
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