You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Force on a Finite Wire

AB is a curre...

Question

$A B$ is a current carrying conductor in the plane of the paper as shown in figure. What are the directions of magnetic fields produced by it at points $P$ and $Q$ ?

into the plane of paper at

Q

and out of it at

P

No worries! We‘ve got your back. Try BYJU‘S free classes today!

out of the plane of paper at

P

and

Q

No worries! We‘ve got your back. Try BYJU‘S free classes today!

into the plane of paper at

P

and

Q

No worries! We‘ve got your back. Try BYJU‘S free classes today!

into the plane of paper at

P

and out of it at

Q

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D into the plane of paper at $P$ and out of it at $Q$
Applying the right hand thumb rule, the direction of magnetic field would be anti-clockwise as shown in diagram around the direction of current. So, the magnetic field at point P would be into the plane of paper. At point Q, the direction of magnetic current would be out from the plane of paper.
The strength of the magnetic field is stronger near the conductor and weaker as we move away from the conductor as the strength of the conductor is inversely proportional to the distance from the conductor. Given that the distance of point P from the conductor is greater than the distance of point Q to the conductor, the magnetic field would be stronger near point Q than near point P.

Suggest Corrections

Similar questions

Q. A long current carrying conductor is placed in the plane of paper as shown in figure. If

B_{1}

and

B_{2}

are magnetic fields at points P and Q respectively, then

Question 15
AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given $r_{1} > r_{2}$ , where will the strength of the magnetic field be larger?

Two long parallel wires $P$ and $Q$ are held perpendicular to the plane of the paper at a acceptance of $5 m$ between them. If $P$ and $Q$ carry currents of $2.5$ and $5 a m p$ respectively in the same direction, then the magnetic field at a point half way between the wire is

Q. Two long parallel wires carrying currents 2.5 A and I A in the same direction (directed Into the plane of the paper) are held M P and Q respectively such that they are perpendicular to the plane of the paper. The points P and Q are located at a distance of 5 m and 2 m, respectively, from a collinear point R as shown in figure. An electron moving with a velocity of

4 \times 10^{5} m s^{- 1}

along the positive X-direction experiences a force of magnitude

3.2 \times 10^{- 20}

N at the point R.
The current I in wire Q is

Q. Question 5
A uniform magnetic field exists in the plane of paper pointing from left to right as shown in Figure. In the field, an electron and a proton move as shown. The electron and the proton experience

(a) forces both pointing into the plane of paper
(b) forces both pointing out of the plane of paper
(c) forces pointing into the plane of paper and out of the plane of paper, respectively
(d) force pointing opposite and along the direction of the uniform magnetic field respectively

Join BYJU'S Learning Program

AB is a current carrying conductor in the plane of the paper as shown in figure. What are the directions of magnetic fields produced by it at points P and Q?

$A B$ is a current carrying conductor in the plane of the paper as shown in figure. What are the directions of magnetic fields produced by it at points $P$ and $Q$ ?