A long wire A carries a current of 10 amp. Another long wire B, which is paralle

Sail E0 Webinar

Question

A long wire A carries a current of 10 amp. Another long wire B, which is parallel to A and separated by 0.1 m from A, carries a current of 5 amp in the opposite direction to that in A. What is the magnitude and nature of the force experienced per unit length of B

[μ_{0} = 4 π \times 10^{- 7} w e b e r / a m p - m]

Options:

A . Repulsive force of 10−4N/m

B . Attractive force of 10−4N/m

C . Repulsive force of 2π×10−5N/m

D . Attractive force of 2π×10−5N/m

Answer: Option A
:
A
By using

\frac{F}{l} = \frac{μ_{0}}{4 π} . \frac{2 i_{1} i_{2}}{a}

\Rightarrow

\frac{F}{l} = 10^{- 7} \times \frac{2 \times 10 \times 5}{0.1} = 10^{- 4} N

Wires are carrying current in opposite direction so the force will be repulsive.

A Long Wire A Carries A Current Of 10 Amp. Another Long Wire...

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. Suppose a room has a magnetic field directed downwards. In order to experience the maximum magnetic force, the current....magnetic force, the current carrying wire must be kept horizontal.

Question 2. If a bar magnet was cut initially into two pieces. Then each of the new pieces was cut into two more pieces, and the pro....time, find out the number of the north pole generated?

Question 3. If the direction of current in the conductor and the magnetic field are the same, in which way will the conductor move?....are the same, in which way will the conductor move?

Question 4. What happens in the fuse which melts it to break the electrical circuit?....

Question 5. During short circuit, the current increases drastically at the short-circuit spot.....

Question 6. A magnetic needle which is kept near a conductor gets deflected when current is passed through the conductor.....

Question 7. What can be said about the direction of force, if the current is reversed in the conductor placed in a magnetic field?....

Question 8. A long current carrying solenoid produces an uniform magentic field inside it.....

Question 9. If the above bar magnet is broken along the middle line, then how many north poles and south poles will be formed?....

Question 10. For making a strong electromagnet, the material of the core should be:....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0