Home
Class 12
PHYSICS
A conducting rod of length 2 m is placed...

A conducting rod of length 2 m is placed on a horizontal table in north-south direction. It carries a current of 5A from south to north. Find the direction and magnitude of the magnetic force acting on the rod. Given that the Earth's magnetic field at the place is `0.6xx10^(-4)T` and angle of dip is `(pi)/(6)`.

Text Solution

Verified by Experts

Here length of rod `l=2m`, current flowing in rod I = 5A, Earth.s magnetic field `B_(E )=0.6xx10^(-4)T` and angle of dip `delta=(pi)/(6)`.
As rod is placed horizontaly in north-south direction and current is flowing south to north, there is no magnetic force due to `B_(H)`, the horizontal component of earth.s field and force is solely due to vertical component `B_(V)` of the earth.s magnetic field which is acting vertically downward.
`therefore F=I l B_(V)=I l B_(E ) sin delta=5xx2xx(0.6xx10^(-4))xx"sin"(pi)/(6)=3xx10^(-4)N`
In accordance with Fleming.s left hand rule the force F is in horizontal plane directed from east to west direction.
Promotional Banner

Topper's Solved these Questions

  • CBSE EXAMINATION PAPER 2020

    U-LIKE SERIES|Exercise SECTION C|10 Videos

  • ATOMS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION C)|2 Videos

  • CBSE EXAMINATION PAPER 2020 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|11 Videos

Similar Questions

Explore conceptually related problems

a) A circular loop of Radius R carries a current I. Obtain an expression for the magnetic field at a point on its axis at a distance of x from its centre. b) A conducting rod of length 2 m is placed on a horizontal table in north-south direction. It carries a current of 5 A from south to north. Find the direction and magnitude of magnetic force acting on the rod. Given that Earth's magnetic field at the place is 0.6 xx 10^(-4) T and angle of dip is (pi/6)

A wire placed along north-south direction carries a current of 5A from south to north. Find the magnetic field due to a 1cm piece of wire at a point 200cm north east from the piece.

A wire placed along the north-south direction carries a current of 8A from south to north. Find the magnetic field due to a 1cm piece of wire at a point 200 cm north-east from the piece.

A wire placed along north-south direction carries a current of 10 A from south to north. Find the magnetic field due to a 1 cm piece of wire at a point 200cm north-east from the piece.

A current element of length 0.1 cm is placed along northsouth direction and carries a current of 5 A from south to north. Find the magnetic field due to the current element at a point located at a distance of 150 cm from it towards east.

A straight wire carries a current of 6A from south to north direction. What is the magnetic field due to 1cm piece of wire at a point 50cm , 30^@ east of north?

An electric current flows in a wire from north to south. What will be the direction of the magnetic field due to this wire at a point.

A long straight wire in the horizontal plane carries as curret of 75 A in north to south direction, magnitude and direction of field B at a point 3 m east of the wire is

The angle of dip at a place is 37^(@) and the vertical component of the earth's magnetic field is 6xx10^(-5) T . What is the earth's magnetic field at this place? (tan 37^(@)=3/4)