Physics-
General
Easy

Question

A wire loop is placed in a region of time varying magnetic field which is oriented orthogonally to the plane of the loop as shown in the figure. The graph shows the magnetic field variation as the function of time. Assume the positive emf is the one which drives a current in the clockwise direction and seen by the observer in the direction of B. Which of the following graphs best represents the induced emf as a function of time.

  1.    
  2.    
  3.    
  4.    

The correct answer is:

Related Questions to study

General
physics-

a conducting loop of radius R is present in a uniform magnetic field B perpendicular the plane of the ring. If radius R varies as a function of time ‘t’, as R = R0+ t. The e.m.f induced in the loop is

a conducting loop of radius R is present in a uniform magnetic field B perpendicular the plane of the ring. If radius R varies as a function of time ‘t’, as R = R0+ t. The e.m.f induced in the loop is

physics-General
General
physics-

A metal ball of radius R is placed concentrically inside a hollow metal sphere of inner radius 2R and outer radius 3R. The ball is given a charge +2Q and the hollow sphere a total charge – Q. The electrostatic potential energy of this system is :

A metal ball of radius R is placed concentrically inside a hollow metal sphere of inner radius 2R and outer radius 3R. The ball is given a charge +2Q and the hollow sphere a total charge – Q. The electrostatic potential energy of this system is :

physics-General
General
physics-

A positive charge q is placed in a spherical cavity made in a positively charged sphere. The centres of sphere and cavity are displaced by a small distance stack l with rightwards arrow on top Force on charge q is

A positive charge q is placed in a spherical cavity made in a positively charged sphere. The centres of sphere and cavity are displaced by a small distance stack l with rightwards arrow on top Force on charge q is

physics-General
parallel
General
physics-

Two spherical, nonconducting, and very thin shells of uniformly distributed positive charge Q and radius d are located a distance 10d from each other. A positive point charge q is placed inside one of the shells at a distance d/2 from the center, on the line connecting the centers of the two shells, as shown in the figure. What is the net force on the charge q?

Two spherical, nonconducting, and very thin shells of uniformly distributed positive charge Q and radius d are located a distance 10d from each other. A positive point charge q is placed inside one of the shells at a distance d/2 from the center, on the line connecting the centers of the two shells, as shown in the figure. What is the net force on the charge q?

physics-General
General
physics-

An infinite, uniformly charged sheet with surface charge density sigma cuts through a spherical Gaussian surface of radius R at a distance x from its center, as shown in the figure. The electric flux through the Gaussian surface is

An infinite, uniformly charged sheet with surface charge density sigma cuts through a spherical Gaussian surface of radius R at a distance x from its center, as shown in the figure. The electric flux through the Gaussian surface is

physics-General
General
physics-

Both question (a) and (b) refer to the system of charges as shown in the figure. A spherical shell with an inner radius 'a' and an outer radius 'b' is made of conducting material. A point charge +Q is placed at the centre of the spherical shell and a total charge – q is placed on the shell

Charge – q is distributed on the surfaces as

Both question (a) and (b) refer to the system of charges as shown in the figure. A spherical shell with an inner radius 'a' and an outer radius 'b' is made of conducting material. A point charge +Q is placed at the centre of the spherical shell and a total charge – q is placed on the shell

Charge – q is distributed on the surfaces as

physics-General
parallel
General
physics-

4 charges are placed each at a distance 'a' from origin. The dipole moment of configuration is

4 charges are placed each at a distance 'a' from origin. The dipole moment of configuration is

physics-General
General
physics-

Two short electric dipoles are placed as shown. The energy of electric interaction between these dipoles will be
125201

Two short electric dipoles are placed as shown. The energy of electric interaction between these dipoles will be
125201

physics-General
General
physics-

A large sheet carries uniform surface charge density sigma. A rod of length 2l has a linear charge density lambda on one half and negative lambda on the second half. The rod is hinged at mid point O and makes an angle theta with the normal to the sheet. The torque experienced by the rod is

A large sheet carries uniform surface charge density sigma. A rod of length 2l has a linear charge density lambda on one half and negative lambda on the second half. The rod is hinged at mid point O and makes an angle theta with the normal to the sheet. The torque experienced by the rod is

physics-General
parallel
General
physics-

Figure shows the electric field lines around an electric dipole. Which of the arrows best represents the electric field at point P?

Figure shows the electric field lines around an electric dipole. Which of the arrows best represents the electric field at point P?

physics-General
General
physics-

A, B, C, D, P and Q are points in a uniform electric field. The potentials a these points are V (A) = 2 volt. V (P) = V (B) = V (D) = 5 volt. V (C) = 8 volt. The electric field at P is

A, B, C, D, P and Q are points in a uniform electric field. The potentials a these points are V (A) = 2 volt. V (P) = V (B) = V (D) = 5 volt. V (C) = 8 volt. The electric field at P is

physics-General
General
physics-

An equilateral triangle wire frame of side L having 3 point charges at its vertices is kept in x-y plane as shown. Component of electric field due to the configuration in z direction at (0, 0, L) is [origin is centroid of triangle]

An equilateral triangle wire frame of side L having 3 point charges at its vertices is kept in x-y plane as shown. Component of electric field due to the configuration in z direction at (0, 0, L) is [origin is centroid of triangle]

physics-General
parallel
General
physics-

A wheel having mass m has charges +q and –q on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform vertical electric field E =

A wheel having mass m has charges +q and –q on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform vertical electric field E =

physics-General
General
physics-

Find the force experienced by the semicircular rod charged with a charge q, placed as shown in figure. Radius of the wire is R and the line of charge with linear charge density l is passing through its centre and perpendicular to the plane of wire.

Find the force experienced by the semicircular rod charged with a charge q, placed as shown in figure. Radius of the wire is R and the line of charge with linear charge density l is passing through its centre and perpendicular to the plane of wire.

physics-General
General
physics-

A uniform electric field having strength stack E with rightwards arrow on top is existing in x-y plane as shown in figure. Find the p.d. between origin O & A(d, d, 0)

A uniform electric field having strength stack E with rightwards arrow on top is existing in x-y plane as shown in figure. Find the p.d. between origin O & A(d, d, 0)

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.