The right hand thumb rule is used to find the:

force on a charged particle passing through the magnetic field.

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force on a current carrying conductor placed in a magnetic field.

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direction of induced current.

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direction of magnetic field around a current carrying straight conductor.

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Solution

The correct option is D direction of magnetic field around a current carrying straight conductor.
Right hand rules states that "If the current carrying conductor is held in the right hand by pointing thumb finger towards the direction of current flow and the other fingers curled around the conductor then the curled fingers indicate the direction of the magnetic field due to the current carrying conductor". This rule only gives the direction of the magnetic field of the current carrying conductor.

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Similar questions

Q. (a) Write Fleming's left-hand rule for the direction of force on a current carrying conductor placed in a magnetic field.
(b) Draw a diagram to show lines of magnetic field inside and around a current carrying solenoid.
(c) Write the names of four devices where current carrying conductor is used along with magnetic fields.

Q. With the help of a labeled diagram illustrate the pattern of magnetic field lines of the magnetic field around a current carrying straight long conducting wire. How is the right hand thumb rule useful to find direction of magnetic field associated with a current carrying conductor?

(a) A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.

(b) State two ways to increase the force on a current-carrying conductor in a magnetic field.

State the rule to determine the direction of a (i) magnetic field produced around a straight conductor-carrying current, (ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it, and (iii) current induced in a coil due to its rotation in a magnetic field.

When a wire is carrying current, the magnetic field around the conductor can be found by ___ hand thumb rule.

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