Home
Class 12
PHYSICS
An infifnitely long conductor PQR is ben...

An infifnitely long conductor `PQR` is bent to form a right angle as shown in figure. A current `I` flows through `PQR`. The magnetic field due to this current at the point `M` is `H_1` Now, another infinitely long straight conductor `QS` is connected at `Q`, so that current is `I/2` in `QR` as well as in `QS`, the current in `PQ` remaining unchanged. The magnetic field at `M` is now `H_2`. The ratio `H_1/H_2` is given by `

A

`1/2`

B

1

C

`2/3

D

2

Text Solution

Verified by Experts

`H_1=` Magnetic field at `M` due to `PQ+`Magnetic field at `M` due to `QR`
but magnetic field at M due to `QR=0`
`:.` Magnetic field at M due to `PQ `(or due to current `I` in `PQ`)
`=H_1`
Now `H_2=`Magnetic fiedl at `M` due to `P` (current `I`)
`+`magnetic field at `M` due to `QS` (current `I/2`) `+` magnetic field at `M` due to `QR`
`=H_1+H_1/2+0=3/2H_1`
`H_1/H_2=2/3`
Promotional Banner

Topper's Solved these Questions

  • MAGNETICS

    DC PANDEY ENGLISH|Exercise INTRODUCTORY EXERCISE|1 Videos

  • MAGNETICS

    DC PANDEY ENGLISH|Exercise SUBJECTIVE_TYPE|1 Videos

  • MAGNETIC FIELD AND FORCES

    DC PANDEY ENGLISH|Exercise Medical entrance s gallery|59 Videos

  • MAGNETISM AND MATTER

    DC PANDEY ENGLISH|Exercise Medical gallery|1 Videos

Similar Questions

Explore conceptually related problems

An infinitely long conductor PQR is bent to form a right angle as shown. A current I flows through PQR. The magnetic field due to this current at the point M is B_(1) . Now, another infinitely long straight conductor QS is connected at Q so that the current is I//2 in QR as well as in QS, the current in PQ remaining unchanged. The magnetic field at M is now B_(2) = 4 mT . Find the value of B_(1) ("in" mT) .

An infinitely long conductor is bent into a circle as shown in figure. It carries a current I ampere and the radius of loop is R metre. The magnetic induction at the centre of loop is

Find the magnetic field at centre P due to current i in the conductor as shown in fig.

A wire of infinite length bent as shown in figure carries current l. What is the magnetic field at the point P ?

The magnetic field at the origin due to the current flowing in the wire is

The magnetic field at the origin due to the current flowing in the wire is

The magnetic field in a straight current carrying conductor wire is:

An infinite current carrying conductor is bent into three segment (1), (2) and (3) as shown in Fig. If it carries a current i, find the magnetic induction at the origin.

Find magnetic field at O due to the current carrying conductor as shown in the figure.

A long current carrying wire is bent as shown. The magnetic field induction at O is