Physics-
General
Easy
Question
In the given figure, the electron enters into the magnetic field. It deflects in .. direction
- + ve X direction
- – ve X direction
- + ve Y direction
- – ve Y direction
The correct answer is: – ve Y direction
By Fleming's left hand rule.
Related Questions to study
Physics-
An electron (mass = 9× 10–31kg. Charge = 1.6 × 10–19C) whose kinetic energy is 7.2 × 10–18 joule is moving in a circular orbit in a magnetic field of 9 × 10–5 weber/m2. The radius of the orbit is
An electron (mass = 9× 10–31kg. Charge = 1.6 × 10–19C) whose kinetic energy is 7.2 × 10–18 joule is moving in a circular orbit in a magnetic field of 9 × 10–5 weber/m2. The radius of the orbit is
Physics-General
Physics-
Two particles A and B of masses 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 masses 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
Physics-
In the figure, what is the magnetic field at the point O
In the figure, what is the magnetic field at the point O
Physics-General
Physics-
A coil having N turns carry a current I as shown in the figure. The magnetic field intensity at point P is
A coil having N turns carry a current I as shown in the figure. The magnetic field intensity at point P is
Physics-General
Physics-
A current of 10A is passing through a long wire which has semicircular loop of the radius 20cm as shown in the figure. Magnetic field produced at the centre of the loop is
A current of 10A is passing through a long wire which has semicircular loop of the radius 20cm as shown in the figure. Magnetic field produced at the centre of the loop is
Physics-General
Physics-
A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is
A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is
Physics-General
Physics-
Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is
Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is
Physics-General
Physics-
A wire carrying current i is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field is directed
A wire carrying current i is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field is directed
Physics-General
Physics-
A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ, the speed of the ring is V and the potential difference developed across the ring is
A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ, the speed of the ring is V and the potential difference developed across the ring is
Physics-General
Physics-
An electron moves along the line AB, which lies in the same plane as a circular loop of conducting wires as shown in the diagram. What will be the direction of current induced if any, in the loop
An electron moves along the line AB, which lies in the same plane as a circular loop of conducting wires as shown in the diagram. What will be the direction of current induced if any, in the loop
Physics-General
Physics-
In the circuit shown switch k2 is open and switch k1 is closed at t = 0. At time t = to switch k1 is opened and switch k2 is simultaneously closed. The variation of inductor current with time is
In the circuit shown switch k2 is open and switch k1 is closed at t = 0. At time t = to switch k1 is opened and switch k2 is simultaneously closed. The variation of inductor current with time is
Physics-General
Physics-
An equilateral triangular loop having a resistance R and length of each side l is placed in a magnetic field which is varying at The induced current in the loop will be
An equilateral triangular loop having a resistance R and length of each side l is placed in a magnetic field which is varying at The induced current in the loop will be
Physics-General
Physics-
A uniform but time varying magnetic field is present in a circular region of radius R The magnetic field is perpendicular and into the plane of the loop and the magnitude of the field is increasing at a constant rate .There is a straight conducting rod of length 2R placed as shown in figure .The magnitude of induced emf across the rod is
A uniform but time varying magnetic field is present in a circular region of radius R The magnetic field is perpendicular and into the plane of the loop and the magnitude of the field is increasing at a constant rate .There is a straight conducting rod of length 2R placed as shown in figure .The magnitude of induced emf across the rod is
Physics-General
Physics-
Time constant of L-R circuit will be
Time constant of L-R circuit will be
Physics-General
Physics-
A large number of infinite long thin wires each carrying current i0 are kept along z-axis. Then the value of magnetic field ‘B’, at any point ‘P’ at a distance ‘x’ from O varies as
A large number of infinite long thin wires each carrying current i0 are kept along z-axis. Then the value of magnetic field ‘B’, at any point ‘P’ at a distance ‘x’ from O varies as
Physics-General