NEET Physics Moving Charges and Magnetism Class 12 Questions

As shown in the figure, a long straight conductor with semicircular arc of radius π/10 m is carrying current I = 3A. The magnitude of the magnetic field, at the center O of the arc is: (The permeability of the vacuum = 4π × 10⁻⁷ NA⁻²)

Which of the following statements are correct?

(A) Electric monopoles do not exist whereas magnetic monopoles exist.

(B) Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined.

(C) Magnetic field lines are completely confined within a toroid.

(D) Magnetic field lines inside a bar magnet are not parallel.

(E) χ = -1 is the condition for a perfect diamagnetic material, where χ is its magnetic susceptibility.

An electron is moving along the positive x-axis. If the uniform magnetic field is applied parallel to the negative z-axis. Then

A. The electron will experience magnetic force along positive y-axis

B. The electron will experience magnetic force along negative y-axis

C. The electron will not experience any force in magnetic field

D. The electron will continue to move along the positive x-axis

E. The electron will move along circular path in magnetic field

Choose the correct answer from the options given below:

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment = m. Which configuration has highest net magnetic dipole moment?

What is the magnetic field at every point on a circle of radius r with the wire along its axis?

What is used to convert a galvanometer into an ammeter?

What is the effect of introducing a shunt resistance in parallel with a galvanometer?

What is the direction of the force exerted on the arm AB of a rectangular loop when placed in a uniform magnetic field B that is in the plane of the loop?

What is the effect of a magnetic field on a charge that is moving parallel to the field?

What is the orientation of stable equilibrium for a current-carrying loop in an external magnetic field?

What is the formula to calculate the magnetic field B at a distance d from a long, straight conductor carrying a current I?

What is the direction of the magnetic field produced by a current element according to the Biot-Savart Law?

What does the magnetic moment of a current loop depend on?

According to Ampere's Law, what does the integral of the magnetic field B over a closed loop equal to?

What does Ampere's law state regarding the integral of the magnetic field B and the length element dl?

What phenomenon did Hans Christian Oersted discover regarding a current-carrying wire?

What is the purpose of introducing a shunt resistance in a galvanometer?

What is the purpose of introducing a shunt resistance in parallel with a galvanometer?

What is the primary function of a shunt resistance in a galvanometer?

According to the Biot-Savart Law, the magnetic field produced by a current element is proportional to which of the following?

According to Ampere's Law, what does the integral of the magnetic field B along a closed loop equal?

What does Ampere's Law state about the relationship between the magnetic field and the total current through a closed loop?

What is the formula for the magnetic force experienced by a straight conductor of length l carrying a steady current I in a uniform magnetic field B?

What is the effect of the angle between the current-carrying wire and the magnetic field on the magnetic force experienced by the wire?

What defines the magnetic moment of a current loop?

What is the main implication of a uniform magnetic field around a wire carrying current in a circular path?

What did the postulation of electric charges in the atom help to explain, as acknowledged by the Nobel Prize awarded in 1902?

What can be inferred about the magnetic field at every point on a circle of radius r when a current-carrying wire is placed along the axis?

According to Ampere's Law, what does the integral B . dl represent?

What is the expression for the magnetic field due to a current element according to the Biot-Savart Law?

According to Ampere's Law, what does the integral B . dl equal to?

Which of the following statements about the magnetic force on a current-carrying loop in a magnetic field is correct?

Which of the following statements about the magnetic force on a current-carrying wire is correct?

Which of the following statements about the magnetic force on a current-carrying conductor is correct?

Which of the following statements about the relationship between electricity and magnetism is correct?

Which of the following statements about the magnetic field and electric charges is correct?

Which of the following statements about the relationship between electricity and magnetism is correct?

Which of the following statements about Ampere's Law is correct?

Which of the following statements about the Biot-Savart Law is correct?

Which combination of statements about the magnetic force on a current-carrying loop in a uniform magnetic field is correct?

Which of the following statements about the magnetic field produced by a current-carrying wire are correct?

Which of the following statements regarding Ampere's Law is correct?

Which of the following statements about the Biot-Savart Law is correct?

Which combination of statements accurately describes the magnetic force on a current-carrying conductor in an external magnetic field?

Which of the following statements regarding the magnetic force on a current-carrying wire is correct?

Which of the following statements about the relationship between electricity and magnetism is correct?

Which of the following statements about magnetic fields and current-carrying conductors is correct?

Which of the following statements about Ampere's Law is correct?

Which of the following statements about Ampere's Law is correct?

Which of the following statements about the Biot-Savart Law is correct?