Physics-
General
Easy
Question
A charged particle enters a uniform magnetic field perpendicular to its initial direction travelling in air. The path of the particle is seen to follow the path in figure. Which of statements 1-3 is/are correct? [1] The magnetic field strength may have been increased while the particle was travelling in air [2] The particle lost energy by ionising the air [3] The particle lost charge by ionising the air
- 1,2,3 are correct
- 1,2 only are correct
- 2,3 only are correct
- 1 only
The correct answer is: 1,2 only are correct
Related Questions to study
Physics-
A particle of specific charge (charge per unit mass) is released at time t=0 from origin with an initial velocity of in a uniform magnetic field . Find position of particle at any time t.
A particle of specific charge (charge per unit mass) is released at time t=0 from origin with an initial velocity of in a uniform magnetic field . Find position of particle at any time t.
Physics-General
Physics-
A block of mass m & charge is released on a long smooth inclined plane magnetic field B is constant, uniform, horizontal and parallel to surface as shown. Find the time from start when block loses contact with the surface.
A block of mass m & charge is released on a long smooth inclined plane magnetic field B is constant, uniform, horizontal and parallel to surface as shown. Find the time from start when block loses contact with the surface.
Physics-General
Physics-
The direction of magnetic force on the electron as shown in the diagram is along
The direction of magnetic force on the electron as shown in the diagram is along
Physics-General
Physics-
A mass spectrometer is a device which select particle of equal mass. An ion with electric charge q>0 and mass m starts at rest from a source S and is accelerated through a potential difference V. It passes through a hole into a region of constant magnetic field perpendicular to the plane of the paper as shown in the figure. The particle is deflected by the magnetic field and emerges through the bottom hole at a distance d from the top hole. The mass of the particle is
A mass spectrometer is a device which select particle of equal mass. An ion with electric charge q>0 and mass m starts at rest from a source S and is accelerated through a potential difference V. It passes through a hole into a region of constant magnetic field perpendicular to the plane of the paper as shown in the figure. The particle is deflected by the magnetic field and emerges through the bottom hole at a distance d from the top hole. The mass of the particle is
Physics-General
Physics-
A charged particle A of charge q=2C has velocity v=100m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r=2m).
A charged particle A of charge q=2C has velocity v=100m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r=2m).
Physics-General
Physics-
A current I flows in along straight wire with cross section having the form a half circular ring of radius R The magnetic field induction at the point O is
A current I flows in along straight wire with cross section having the form a half circular ring of radius R The magnetic field induction at the point O is
Physics-General
Physics-
An infinitely long wire is bent in the form of a semicircle at the end as shown in the figure. It carries current I along abcdo. If radius of the semicircle be R, then the magnetic field at 'O' which is the center of the circular part is,
An infinitely long wire is bent in the form of a semicircle at the end as shown in the figure. It carries current I along abcdo. If radius of the semicircle be R, then the magnetic field at 'O' which is the center of the circular part is,
Physics-General
Physics-
Two wires A and B are of lengths 40cm and 30cm. A is bent into a circle of radius r and B into an arc of radius r. A current is passed through A and through B. To have the same magnetic inductions at the centre, the ratio of is
Two wires A and B are of lengths 40cm and 30cm. A is bent into a circle of radius r and B into an arc of radius r. A current is passed through A and through B. To have the same magnetic inductions at the centre, the ratio of is
Physics-General
Physics-
Equal current 'i' flows in the two segments of a circular loop in the direction shown in fig. radius of the loop is 'a'. Magnetic field at the centre of the loop is,
Equal current 'i' flows in the two segments of a circular loop in the direction shown in fig. radius of the loop is 'a'. Magnetic field at the centre of the loop is,
Physics-General
Physics-
An infinitely long conductor PQR is bent to form a right angle as shown. A current I flows through PQR. The magnetic field due to this current at the point M is . Now another infinitely long straight conductor QS is connected to Q so that the current is, 1/2 in QR as well as in QS, the current in PQ remaining unchanged. The magnetic field at M is now The ratio is given by
An infinitely long conductor PQR is bent to form a right angle as shown. A current I flows through PQR. The magnetic field due to this current at the point M is . Now another infinitely long straight conductor QS is connected to Q so that the current is, 1/2 in QR as well as in QS, the current in PQ remaining unchanged. The magnetic field at M is now The ratio is given by
Physics-General
Physics-
Two long parallel conductors carry currents and both are directed into the plane of paper. The magnitude of resultant magnetic field at point ' ' is,
Two long parallel conductors carry currents and both are directed into the plane of paper. The magnitude of resultant magnetic field at point ' ' is,
Physics-General
Physics-
When 0.005A current flows through a moving coil galvanometer, it gives full scale deflection. It is converted into a voltmeter to read 5 Volt, using an external resistance of . The resistance of galvanometer in ohms is
When 0.005A current flows through a moving coil galvanometer, it gives full scale deflection. It is converted into a voltmeter to read 5 Volt, using an external resistance of . The resistance of galvanometer in ohms is
Physics-General
Physics-
The force exerted by the conductor AB on the loop CDFG shown in figure is
The force exerted by the conductor AB on the loop CDFG shown in figure is
Physics-General
Physics-
Three long straight and parallel wires, carrying currents are arranged as shown figure. The force experienced by the conductor 'B' of length 25cm is
Three long straight and parallel wires, carrying currents are arranged as shown figure. The force experienced by the conductor 'B' of length 25cm is
Physics-General
Physics-
Two particles A and B of mass and respectively and having the same charge are moving in a plane. A uniform magnetic field exists perpendicular to this plane. The speeds of the particles are and respectively, and the trajectories are as shown in the figure. Then
Two particles A and B of mass and respectively and having the same charge are moving in a plane. A uniform magnetic field exists perpendicular to this plane. The speeds of the particles are and respectively, and the trajectories are as shown in the figure. Then
Physics-General