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Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Class 10 MCQ


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10 Questions MCQ Test Physics for Class 10 - Case Based Questions Test: Magnetic Effects of Electric Current - 1

Case Based Questions Test: Magnetic Effects of Electric Current - 1 for Class 10 2024 is part of Physics for Class 10 preparation. The Case Based Questions Test: Magnetic Effects of Electric Current - 1 questions and answers have been prepared according to the Class 10 exam syllabus.The Case Based Questions Test: Magnetic Effects of Electric Current - 1 MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Case Based Questions Test: Magnetic Effects of Electric Current - 1 below.
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Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 1

Read the following passage and answer the questions :

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.

Q. Why do the iron fillings arrange themselves in a particular pattern:

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 1
The magnet exerts its influence in the region surrounding it. Therefore the iron filings experience a force. The force thus exerted makes iron filings to arrange in a pattern. The lines along which the iron filings align themselves represent magnetic field lines.
Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 2

Read the following passage and answer the questions :

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.

Q. The close field lines indicate:

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 2
Magnetic field lines can be drawn around a bar magnet using a magnetic compass. The field lines do not cross each other. Region A has a stronger magnetic field. This is due to the strength of the field is proportional to the relative closeness of field lines.
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Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 3

Read the following passage and answer the questions :

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.

Q. What do the lines along which the iron filings align represent:

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 3
The magnet exerts its influence in the region surrounding it. Therefore the iron filings experience a force. The force thus exerted makes iron filings to arrange in a pattern. The region surrounding the magnet, in which the force of the magnet can be detected, is said to have a magnetic field. The lines along which the iron filings align themselves represent magnetic field lines.
Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 4

Read the following passage and answer the questions :

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.

Q. What is SI unit of magnetic field:

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 4
The tesla (symbol T) is the derived SI unit of magnetic flux density, which represents the strength of a magnetic field. One tesla represents one weber per square meter.
Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 5

Read the following passage and answer the questions :

A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it. He sprinkles some iron filings uniformly around the bar magnet. Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.

Q. What does the crowding of iron filings at the end of the magnet indicate?

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 5
Crowding of iron filings at the ends of the magnet indicates that the magnetic field is strongest near the poles of the magnet.
Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 6

Read the following passage and answer the questions:

A solenoid is a long helical coil of wire through which a current is run in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one

end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc.

The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid.

The unit of magnetic field as given in the graph attached is in mili-Tesla (mT) and the current is given in Ampere.

Q. What type of energy conversion is observed in a linear solenoid?

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 6
A “Linear Solenoid” is an electromagnetic device that converts electrical energy into a mechanical pushing or pulling force or motion.
Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 7

Read the following passage and answer the questions:

A solenoid is a long helical coil of wire through which a current is run in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one

end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc.

The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid.

The unit of magnetic field as given in the graph attached is in mili-Tesla (mT) and the current is given in Ampere.

After analysing the graph a student writes the following statements.

(I) The magnetic field produced by the solenoid is inversely proportional to the current.

(II) The magnetic field produced by the solenoid is directly proportional to the current.

(III) The magnetic field produced by the solenoid is directly proportional to the square of the current.

(IV) The magnetic field produced by the solenoid is independent of the current.

Choose from the following which of the following would be the correct statement(s).

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 7
Magnetic field inside a solenoid is given by

B = μ0nI

therefore, B ∝ I

Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 8

Read the following passage and answer the questions:

A solenoid is a long helical coil of wire through which a current is run in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one

end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc.

The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid.

The unit of magnetic field as given in the graph attached is in mili-Tesla (mT) and the current is given in Ampere.

Q. What will happen if a soft iron bar is placed inside the solenoid?

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 8
The magnetic field around a current carrying solenoid is similar to the magnetic field produced by a bar magnet.

When a soft iron bar is introduced inside a current carrying solenoid, the magnetic field inside the solenoid will increase.

Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 9

Read the following passage and answer the questions:

A solenoid is a long helical coil of wire through which a current is run in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one

end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc.

The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid.

The unit of magnetic field as given in the graph attached is in mili-Tesla (mT) and the current is given in Ampere.

Q. From the graph deduce which of the following statements is correct.

Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 10

Read the following passage and answer the questions:

A solenoid is a long helical coil of wire through which a current is run in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one

end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc.

The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid.

The unit of magnetic field as given in the graph attached is in mili-Tesla (mT) and the current is given in Ampere.

Q. The magnetic field lines produced inside the solenoid are similar to that of …

Detailed Solution for Case Based Questions Test: Magnetic Effects of Electric Current - 1 - Question 10
Magnetic field of a solenoid carrying current is similar to a bar magnet as it also has the poles on either side and field lines(magnetic) are curved outside and straight inside the solenoid.
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