Home
Class 12
PHYSICS
A current I flows through a long straigh...

A current I flows through a long straight conductor which is bent into a circular loop of radius R in the middle as shown in the figure .

The magnitude of the net magnetic field at point O will be

A

Zero

B

`(mu_0I)/(2R)(1+pi)`

C

`(mu_0I)/(4piR)`

D

`(mu_0I)/(2R)(1-1/pi)`

Text Solution

Verified by Experts

The correct Answer is:
d
[Hint: Field at O due to long straight conductor , `B_(1)=(mu_0I)/(2piR)o.` and field at O due to circular loop `B_(2)=(mu_0I)/(2R)ox . :.` Net magnetic field at O, `B=B_(2)-B_(1)=(mu_0I)/(2R)(1-1/pi)ox` ]
Promotional Banner

Topper's Solved these Questions

  • CBSE EXAMINATION PAPER 2020 (SOLVED)

    U-LIKE SERIES|Exercise SECTION - A (Fill in the blanks with appropriate answer)|6 Videos

  • CBSE EXAMINATION PAPER 2020 (SOLVED)

    U-LIKE SERIES|Exercise SECTION - A (Answer the following)|6 Videos

  • CBSE EXAMINATION PAPER 2020 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|11 Videos

  • CBSE SAMPLE QUESTION PAPER 2019-20 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|6 Videos

Similar Questions

Explore conceptually related problems

A current - carrying loop is shown in the figure. The magnitude of the magnetic field produced at a point O is

A current I is flowing through the loop , as shown in the figure . The magnetic field at centre O is

A current I flows in a long straight wire (into the plane of the paper) with cross-section having the from of a circular are of radius R a shown in the figure. Find the magnetic induction at the point O .

A current I is flowing in a conductor of length L when it is bent in the form of a circular loop its magnetic moment

A long straight conductor carrying a current i is bent to form an almost complete circular loop of radius r on it. The magnetic field at the centre of the loop

A long wire having a semi-circular loop of radius r carries a current I, as shown in Fig. Find the magnetic field due to entire wire.

A current of 10A flows through a semicircular wire of radius 2 cm as shown in figure (a). What is direction and magnitude of the magnetic field at the centre of semicircle? Would your answer change if the wire were bent as shown in figure (b) ?