At a place the horizontal component of Earth's field is 0.26 10 -4 T and the angle of dip is 60 . The total field is:

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At a place the horizontal component of Earth's field is 0.26 × 10-4 T and the angle of dip is 60°. The total field is:

Answer: 0.52 10 -4 T.

A 0.26 × 10-4 T
B 0.30 × 10-4 T
C 0.45 × 10-4 T
D 0.52 × 10-4 T

Correct answer: D. 0.52 × 10-4 T

Explanation: BH = B cosδ, so B = BH/cos60 = 0.26 × 10-4/0.5 = 0.52 × 10-4 T.

Magnetic field lines of a bar magnet, emerging from the north pole and curving round to enter the south pole outside the magnet

Magnetic field of a bar magnet: field lines emerge from the north pole and re-enter at the south pole outside the magnet, forming continuous closed loops. Image: Geek3, CC BY-SA 3.0, via Wikimedia Commons.

Concept context

Bar magnets, Earth's magnetism, and how different materials respond to an external magnetic field - diamagnetic, paramagnetic, and ferromagnetic behaviour.

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At a place the horizontal component of Earth's field is 0.26 &times; 10<sup>-4</sup> T and the angle of dip is 60&deg;. The total field is:

Concept context

More Magnetism and Matter questions

At a place the horizontal component of Earth's field is 0.26 × 10<sup>-4</sup> T and the angle of dip is 60°. The total field is: