The plane of a dip circle is set in the geographic meridian and the apparent dip is δ 1 . It is then set in a vertical plane perpendicular to the geographic meridian. The apparent dip angle is δ 2 . The declination θ at the place is

tan − 1 ⁡ tan ⁡ δ 1 tan ⁡ δ 2

tan − 1 ⁡ tan ⁡ δ 1 + tan ⁡ δ 2

tan − 1 ⁡ tan ⁡ δ 1 − tan ⁡ δ 2

What is the net force on the square coil?

25 × 10 - 7 N moving towards wire

25 × 10 - 7 N moving away from wire

35 × 10 - 7 N moving towards wire

35 × 10 - 7 N moving away from wire

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In which of the following case no force exerted by a magnetic field on a charge?

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Important Questions on Magnetic Effects of Current and Magnetism

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2020 (Sep-23 Shift-1)>Q 3

Magnetic field

d B

to a current element at any point on its axis is _____

HARD

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2019 (21-Apr Shift-2)>Q 4

A circular coil connected to a battery of emf

E

produced a certain magnetic induction field at its centre. The coil is unwound, stretched to double its length rewound into a coil of

\frac{1^{rd}}{3}

of the original radius and connected to a battery of emf

E^{'}

to produce same field at the centre. Then

E^{'}

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2018 (25-APR Shift-1)>Q 5

A long straight wire carrying electric current $' i'$ is bent at its mid point to form an angle of $45 °$ as shown in the figure. Magnetic field at a point $P$ at a distance $d$ from the point $Q$ of bending is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2021 (19-Aug Afternoon)>Q 6

The magnetic field, of a given length of wire for single turn coil, at its center is

' B'

. then its value for two turns coil for the same wire is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET - 20 Aug 2021 Afternoon>Q 7

Two concentric coils each of radius equal to

4 π cm

are placed at right angles to each other. If

10 A

and

24 A

are the currents flowing through the coils, respectively, the magnetic induction at the center of the coils will be

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET - 20 Aug 2021 Forenoon>Q 8

A wire of length

L

m

carrying a current

I A

is bent in the form of a circle. Magnitude of its magnetic moment is

MEDIUM

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2021 (19-Aug Forenoon)>Q 9

A long thin hollow metallic cylinder of radius $R$ has a current $i$ ampere. The magnetic induction $B$ away from the axis at a distance $' r'$ from the axis varies as shown in

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Magnetic Effects of Current and Magnetism>AP EAPCET 2021 (19-Aug Afternoon)>Q 10

In a co-axial, straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero

In which of the following case no force exerted by a magnetic field on a charge?

Important Questions on Magnetic Effects of Current and Magnetism

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