Read the passage given below and answer the following questions from (i) to (iv).
Hans Christian Oersted, one of the leading scientists of the 19th century, played a crucial role in understanding electromagnetism. In 1820, he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. Through this observation, Oersted showed that electricity and magnetism were related phenomena. This research later created technologies such as radio, television, and fibre optics. The unit of magnetic field was named as Oersted in his honour.
Electromagnetism is the study of electromagnetic force. It is a type of interface that happens between electrically charged particles. The electromagnetic force generally exhibits electromagnetic fields like magnetic fields, electric fields and light, and is known as one of the four essential interactions commonly known as forces in nature. The other 3 important interactions are the strong interaction, gravitation and the weak.
(i) Oersted experiment is used to explain which effect of current?
Electric effect
Magnetic effect
Both (a) and (b)
None of these
(2)
He made us understand that current-carrying wire has a magnetic field around it.
Read the passage given below and answer the following questions from (i) to (iv).
Hans Christian Oersted, one of the leading scientists of the 19th century, played a crucial role in understanding electromagnetism. In 1820, he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. Through this observation, Oersted showed that electricity and magnetism were related phenomena. This research later created technologies such as radio, television, and fibre optics. The unit of magnetic field was named as Oersted in his honour.
Electromagnetism is the study of electromagnetic force. It is a type of interface that happens between electrically charged particles. The electromagnetic force generally exhibits electromagnetic fields like magnetic fields, electric fields and light, and is known as one of the four essential interactions commonly known as forces in nature. The other 3 important interactions are the strong interaction, gravitation and the weak.
(ii) Which instrument helps to detect the presence of magnetic field at a point?
Strong magnet
Solenoid
Compass needle
Current carrying line
(3)
Compass needle is a small bar magnet, whose ends are approximately towards the north and south direction.
Read the passage given below and answer the following questions from (i) to (iv).
Hans Christian Oersted, one of the leading scientists of the 19th century, played a crucial role in understanding electromagnetism. In 1820, he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. Through this observation, Oersted showed that electricity and magnetism were related phenomena. This research later created technologies such as radio, television, and fibre optics. The unit of magnetic field was named as Oersted in his honour.
Electromagnetism is the study of electromagnetic force. It is a type of interface that happens between electrically charged particles. The electromagnetic force generally exhibits electromagnetic fields like magnetic fields, electric fields and light, and is known as one of the four essential interactions commonly known as forces in nature. The other 3 important interactions are the strong interaction, gravitation and the weak.
(iii) In the diagram below, the direction of magnetic field is:
Clockwise
Anti clockwise
Not any fixed direction
None of these
(2)
It is evaluated by using Right Hand Thumb Rule.
Read the passage given below and answer the following questions from (i) to (iv).
Hans Christian Oersted, one of the leading scientists of the 19th century, played a crucial role in understanding electromagnetism. In 1820, he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. Through this observation, Oersted showed that electricity and magnetism were related phenomena. This research later created technologies such as radio, television, and fibre optics. The unit of magnetic field was named as Oersted in his honour.
Electromagnetism is the study of electromagnetic force. It is a type of interface that happens between electrically charged particles. The electromagnetic force generally exhibits electromagnetic fields like magnetic fields, electric fields and light, and is known as one of the four essential interactions commonly known as forces in nature. The other 3 important interactions are the strong interaction, gravitation and the weak.
(iv) On reversing the direction of the current in a wire, the magnetic field produced by it:
Gets reversed in direction
Increase in strength
Decreases in strength
Remains unchanged in strength and direction
(1)
When direction of current changes, then direction of magnetic field produced changes accordingly.
Read the passage given below and answer the following questions from (i) to (v).
A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.
(i) If a charged particle is moving along a magnetic field line, the magnetic force on the particle is:
along with its velocity.
opposite to its velocity.
perpendicular to its velocity.
zero
(4)
Read the passage given below and answer the following questions from (i) to (v).
A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.
(ii) An electron is travelling horizontally towards the east. A magnetic field in the vertically downward direction will exert a force in:
East
West
North
South
(4)
Read the passage given below and answer the following questions from (i) to (v).
A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.
(iii) A uniform magnetic field exists from left to right on a surface. An electron and proton moving in the directions as shown in the figure will experience:
Forces both pointing into the plane of the surface.
Forces both pointing out of the plane of the surface.
The electron will experience into the plane and proton out of the plane.
The electron will experience opposite to and proton along the direction of the uniform magnetic field.
(1)
Read the passage given below and answer the following questions from (i) to (v).
A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.
(iv) Magnetic field exerts no force on:
a stationary electric charge.
a magnet
an electric charge moving perpendicular to its direction.
an unmagnetized iron bar.
(1)
Read the passage given below and answer the following questions from (i) to (v).
A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.
(v) In Fleming’s left-hand rule, the thumb’s direction shows the:
current
field
motion
charge
(3)
Read the passage given below and answer the following questions from (i) to (v).
The space surrounding a magnet in which magnetic force is exerted, is called a magnetic field. The direction of magnetic field lines at a place can be determined by using a compass needle. A compass needle placed near a magnet gets deflected due to the magnetic force exerted by the magnet.
The north end of the needle of the compass indicates the direction of magnetic field at the point where it is placed. When the magnet shown in the diagram below is moving towards the coil, the galvanometer gives a reading to the right.
(i) The direction of induced current is given by:
Right hand thumb rule
Fleming’s right hand rule
Fleming’s left hand rule
Maxwell’s rule
(2)
