Physics
Grade-10
Easy
Question
In the given figure on which two sides of the electric motor no forces are acting?
- AB and BC
- BC and CD
- BC and DA
- AB and CD
Hint:
BC and DA
The correct answer is: BC and DA
Applying Fleming's right hand rule BC and DA are parallel to the magnetic field so the torque is zero as the dipole and magnetic field vectors are parallel. The dipole is thus in a stable equilibrium when it is parallel to the magnetic field hence, no forces are acting.
Related Questions to study
Physics
In the given figure which side of the rectangular current-carrying coil is parallel to the magnetic field?
In the given figure which side of the rectangular current-carrying coil is parallel to the magnetic field?
PhysicsGrade-10
Physics
In an Electric motor ________ remains fixed and ______ rotates.
In an Electric motor ________ remains fixed and ______ rotates.
PhysicsGrade-10
Physics
In a commercial electric motor, the two permanent magnets are replaced with ____.
In a commercial electric motor, the two permanent magnets are replaced with ____.
PhysicsGrade-10
Physics
The direction of the force on a rectangular current-carrying conductor in a magnetic field depends upon ___.
The direction of the force on a rectangular current-carrying conductor in a magnetic field depends upon ___.
PhysicsGrade-10
Physics
The force exerted on a current-carrying wire placed in a magnetic field is maximum when the angle between the wire and the direction of the magnetic field is ____.
The force exerted on a current-carrying wire placed in a magnetic field is maximum when the angle between the wire and the direction of the magnetic field is ____.
PhysicsGrade-10
Physics
The split rings are also known as ____.
The split rings are also known as ____.
PhysicsGrade-10
Physics
The device which converts electrical energy into mechanical energy is called a/an _____.
The device which converts electrical energy into mechanical energy is called a/an _____.
PhysicsGrade-10
Physics
Which of the following factors affect the strength of force experienced by the rectangular current-carrying conductor in a magnetic field?
Which of the following factors affect the strength of force experienced by the rectangular current-carrying conductor in a magnetic field?
PhysicsGrade-10
Physics
A current flow in a wire running between the S and N poles of a magnet lying horizontally as shown in the figure below.
The force on the wire due to the magnet is directed _____.
A current flow in a wire running between the S and N poles of a magnet lying horizontally as shown in the figure below.
The force on the wire due to the magnet is directed _____.
PhysicsGrade-10
Physics
In the given figure which side of the rectangular current-carrying coil is perpendicular to the magnetic field?
In the given figure which side of the rectangular current-carrying coil is perpendicular to the magnetic field?
PhysicsGrade-10
Physics
The side of the rectangular coil will experience a maximum force when the current is ____.
The side of the rectangular coil will experience a maximum force when the current is ____.
PhysicsGrade-10
Physics
The rectangular current-carrying coil of the electric motor executes ______ motion.
The rectangular current-carrying coil of the electric motor executes ______ motion.
PhysicsGrade-10
Physics
No force acts on a current-carrying conductor when it is:
No force acts on a current-carrying conductor when it is:
PhysicsGrade-10
Physics
In an electric motor which force is used to rotate the coil?
In an electric motor which force is used to rotate the coil?
PhysicsGrade-10
Physics
The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of the magnetic field is ___.
The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of the magnetic field is ___.
PhysicsGrade-10
