Home
Class 12
PHYSICS
An electron is moving at 10^(6) ms^(-1) ...

An electron is moving at `10^(6) ms^(-1)` in a direction parallel to a current of 5A flowing through an infinitely long straight wire , separated by a perpendicular distance of 10 cm in air. Calculate the magnitude of the force experienced by the electron.

Text Solution

Verified by Experts

Magnetic field of the straight wire carrying a current of 2A, at a distance of 10cm or 0.1 m from it is
`B = (mu_(0) I)/(2pi r) = (4pi xx 10^(-7)xx 5)/(2i xx 0.1) = 10^(-5)` T
this field acts perpendicular to the direction of the electron . So magnetic force on th electron is
F = qv B sin `90^(@) = 1.6 xx 10^(-19) xx 10^(6) xx 10^(-5) xx 1`
F = `1.6 xx 10^(-18)` N
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM AND MAGNETIC EFFECTS OF ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED - 5-MARK QUESTIONS|8 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( VII. NUMERICAL PROBLEMS )|5 Videos

  • OPTICS

    FULL MARKS|Exercise ADDITIONAL QUESITON - II ADDITIONAL PROBLEMS:|11 Videos

Similar Questions

Explore conceptually related problems

Two long and parallel street wires carrying current of 2A and 5A in the opposite direction are separated by a distance of 1 cm. Find the nature and magnitude of the magnetic force between them.

Two thin long parallel wires separated by a distance 'a' are carrying current I amp each . The magnitude of the force per unit length excited by one wire on the other is

Two parallel wires carry equal currents of 10A along the same direction and are separated by a distance of 2.0 cm. Find the magnetic field at a point which is 2.0 cm away from each of these wires.

Three coplanar parallel wires, each carrying a current of 10 A along the same direction, are placed with a separation 5.0 cm between the consecutive ones. Find the magnitude of the magnetic force per unit length acting on the wires.

A bullet of mass 30 g moving with a speed of 500 ms^(-1) pentrates 10 cm into a fixed target. Calculate the average force exerted by target on the bullet.

Two long parallel straight wires X and Y separated by a distance of 5 cm in air carry currents of 10A and 5A respectively in opposite directions. Calculate the magnitude and direction of the force on a 20 cm length of the wire Y.

Two long, straight wires, each carrying an electric current of 5.0 A, are kept parallel to each other at a separation of 2.5 cm. Find the magnitude of the magnetic force experienced by 10 cm of a wire.

Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are seperated by a distance of 4.0 cm . Estimate the force on a 10 cm section of wire A.

A wire is situated in the eastwest direction and the current flowing through is 0.3 ampere. The wire is held perpendicular to magnetic field of 0.2 xx 10^(-4) N (amp -meter). The force acting on the wire will be

A wire is situated in the east - west direction and the current flowing through is 0.3 ampere. The wire is held perpendicular to magnetic field of 0.2 xx 10^-4 N (amp - meter). The force acting on the wire will be ….