Home
Class 12
PHYSICS
Two long, parallel wires are separated b...

Two long, parallel wires are separated by a distance of `0.400m` (as shown in Fig.) The current `I_1 and I_2` have the direction shown.


(a) Calculate the magnitude of the force exerted by each wire on a 1.20m length of the other. Is the force attractive or repulsive ?
(b) Each current is doubled, so that `I_1` becomes 10.0A and `I_2` becomes 4.00A. Now, what is the magnitude of the force that each wire exerts on a 1.20m length of the other?

Text Solution

Verified by Experts

(a) `F=(mu_0I_1I_2L)/(2pir)`
`=(mu_0(5.00A)(2.00A)(1.20m))/(2pi(0.400m))=6.00xx10^-6N`
The force is repulsive since the currents are in opposite
directions.
(d) Doubling the current make the force increase by a factor of
4 to
`F=2.40xx10^-5N`
Promotional Banner

Topper's Solved these Questions

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS|Exercise Exercise (subjective )|10 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS|Exercise Exercise (single Correct )|75 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS|Exercise Concept Exercise 2.1|35 Videos

  • SEMICONDUCTOR ELECTRONIC : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    CENGAGE PHYSICS|Exercise QUESTION BANK|12 Videos

  • THERMAL PROPERTIES OF MATTER

    CENGAGE PHYSICS|Exercise Question Bank|40 Videos

Similar Questions

Explore conceptually related problems

Two long, parallel straight wires are separated by a distance of 0.2 cm and carry current of 10 A and 8 A. Find the magnitude of the attractive force exerted on 1 m length of one wire by the other wire.

Two long, straight, parallel wires are 1.00m apart (as shown in Fig). The upper wire carries a current I_1 of 6.00A into the plane of the paper. What is the magnitude of the net field at Q?

Two long, straight, parallel wires are 1.00m apart (as shown in Fig). The upper wire carries a current I_1 of 6.00A into the plane of the paper. What is the magnitude of the net field at S?

Two thin long paralel wires separated by a distance b are carrying a current 1 A each. The magnitude of the force per unit length exerted by one wire on the other is

Two long, straight, parallel wires are 1.00m apart (as shown in Fig). The upper wire carries a current I_1 of 6.00A into the plane of the paper. What must the magnitude of the current I_2 be for the net field at point P to be zero?

Two long straight parallel conductors of length l ,separated by a distance d and each carrying a current I attract each other with a force equal to