Physics-
General
Easy

Question

The graph Shows the variation in magnetic flux phi left parenthesis t right parenthesis with time through a coil. Which of the statements given below is not correct

  1. There is a change in the direction as well as magnitude of the induced emf between B and D    
  2. The magnitude of the induced emf is maximum between B and C    
  3. There is a change in the direction as well as magnitude of induced emf between A and C    
  4. The induced emf is zero at B    

The correct answer is: The induced emf is zero at B


    At B, flux is maximum, so from vertical line e vertical line equals fraction numerator d phi over denominator d t end fraction at B vertical line e vertical line equals 0

    Related Questions to study

    General
    physics-

    A simple pendulum with bob of mass m and conducting wire of length L swings under gravity through an angle 2 theta. The earth’s magnetic field component in the direction perpendicular to swing is B. Maximum potential difference induced across the pendulum is

    A simple pendulum with bob of mass m and conducting wire of length L swings under gravity through an angle 2 theta. The earth’s magnetic field component in the direction perpendicular to swing is B. Maximum potential difference induced across the pendulum is

    physics-General
    General
    physics-

    The network shown in the figure is a part of a complete circuit. If at a certain instant the current i is 5 A and is decreasing at the rate of 1 0 to the power of 3 end exponent A divided by s then V subscript A end subscript minus V subscript B end subscript is

    The network shown in the figure is a part of a complete circuit. If at a certain instant the current i is 5 A and is decreasing at the rate of 1 0 to the power of 3 end exponent A divided by s then V subscript A end subscript minus V subscript B end subscript is

    physics-General
    General
    physics-

    The figure shows three circuits with identical batteries, inductors, and resistors. Rank the circuits according to the current through the battery (i) just after the switch is closed and (ii) a long time later, greatest first

    The figure shows three circuits with identical batteries, inductors, and resistors. Rank the circuits according to the current through the battery (i) just after the switch is closed and (ii) a long time later, greatest first

    physics-General
    parallel
    General
    physics-

    What is the mutual inductance of a two-loop system as shown with centre separation l

    What is the mutual inductance of a two-loop system as shown with centre separation l

    physics-General
    General
    Maths-

    Assertion (A) : The length of latus rectum in fig is 24/5.

    Reason (R) : If l 1 and l2are length of segments of a focal chord of a parabola, then its latus rectum is fraction numerator 4 l subscript 1 end subscript l subscript 2 end subscript over denominator l subscript 1 end subscript plus l subscript 2 end subscript end fraction.

    Assertion (A) : The length of latus rectum in fig is 24/5.

    Reason (R) : If l 1 and l2are length of segments of a focal chord of a parabola, then its latus rectum is fraction numerator 4 l subscript 1 end subscript l subscript 2 end subscript over denominator l subscript 1 end subscript plus l subscript 2 end subscript end fraction.

    Maths-General
    General
    maths-

    Assertion: Through (lambda comma lambda + 1) there can not the more than one normal to the parabola y2 = 4x if + lambda < 2.
    Reason: The point (lambda comma lambda + 1) lie out side the parabola for all lambdanot equal to 1.

    Assertion: Through (lambda comma lambda + 1) there can not the more than one normal to the parabola y2 = 4x if + lambda < 2.
    Reason: The point (lambda comma lambda + 1) lie out side the parabola for all lambdanot equal to 1.

    maths-General
    parallel
    General
    maths-

    The point of intersection of the tangents at the ends of the latus rectum of the parabola y2 = 4x is .

    The point of intersection of the tangents at the ends of the latus rectum of the parabola y2 = 4x is .

    maths-General
    General
    maths-

    If a ≠ 0 and the line 2bx + 3cy + 4d = 0 passes through the points of intersection of the parabolas y to the power of 2 end exponent = 4ax and x to the power of 2 end exponent = 4ay, then-

    If a ≠ 0 and the line 2bx + 3cy + 4d = 0 passes through the points of intersection of the parabolas y to the power of 2 end exponent = 4ax and x to the power of 2 end exponent = 4ay, then-

    maths-General
    General
    maths-

    If M is the foot of perpendicular from a point P of a parabola y2 = 4ax to its directrix and SPM is an equilateral triangle, where S is the focus. Then SP equal to-

    If M is the foot of perpendicular from a point P of a parabola y2 = 4ax to its directrix and SPM is an equilateral triangle, where S is the focus. Then SP equal to-

    maths-General
    parallel
    General
    physics-

    A conducting rod AC of length 4l is rotated about a point O in a uniform magnetic field stack B with rightwards arrow on top directed into the paper. AO = l and OC = 3l. Then

    A conducting rod AC of length 4l is rotated about a point O in a uniform magnetic field stack B with rightwards arrow on top directed into the paper. AO = l and OC = 3l. Then

    physics-General
    General
    physics-

    A wire cd of length l and mass m is sliding without friction on conducting rails ax and by as shown. The vertical rails are connected to each other with a resistance R between a and b. A uniform magnetic field B is applied perpendicular to the plane abcd such that cd moves with a constant velocity of

    A wire cd of length l and mass m is sliding without friction on conducting rails ax and by as shown. The vertical rails are connected to each other with a resistance R between a and b. A uniform magnetic field B is applied perpendicular to the plane abcd such that cd moves with a constant velocity of

    physics-General
    General
    physics-

    A rectangular loop with a sliding connector of length l = 1.0 m is situated in a uniform magnetic field B = 2T perpendicular to the plane of loop. Resistance of connector is r = 2capital omega. Two resistance of 6capital omega and 3capital omega are connected as shown in figure. The external force required to keep the connector moving with a constant velocity v = 2m/s is

    A rectangular loop with a sliding connector of length l = 1.0 m is situated in a uniform magnetic field B = 2T perpendicular to the plane of loop. Resistance of connector is r = 2capital omega. Two resistance of 6capital omega and 3capital omega are connected as shown in figure. The external force required to keep the connector moving with a constant velocity v = 2m/s is

    physics-General
    parallel
    General
    physics-

    Plane figures made of thin wires of resistance R = 50 milli ohm/metre are located in a uniform magnetic field perpendicular into the plane of the figures and which decrease at the rate dB/dt = 0.1 m T/s. Then currents in the inner and outer boundary are. (The inner radius a = 10 cm and outer radius b = 20 cm)

    Plane figures made of thin wires of resistance R = 50 milli ohm/metre are located in a uniform magnetic field perpendicular into the plane of the figures and which decrease at the rate dB/dt = 0.1 m T/s. Then currents in the inner and outer boundary are. (The inner radius a = 10 cm and outer radius b = 20 cm)

    physics-General
    General
    physics-

    A highly conducting ring of radius R is perpendicular to and concentric with the axis of a long solenoid as shown in fig. The ring has a narrow gap of width d in its circumference. The solenoid has cross sectional area A and a uniform internal field of magnitude B0. Now beginning at t = 0, the solenoid current is steadily increased to so that the field magnitude at any time t is given by B(t) = B0 + at where alpha greater than 0. Assuming that no charge can flow across the gap, the end of ring which has excess of positive charge and the magnitude of induced e.m.f. in the ring are respectively

    A highly conducting ring of radius R is perpendicular to and concentric with the axis of a long solenoid as shown in fig. The ring has a narrow gap of width d in its circumference. The solenoid has cross sectional area A and a uniform internal field of magnitude B0. Now beginning at t = 0, the solenoid current is steadily increased to so that the field magnitude at any time t is given by B(t) = B0 + at where alpha greater than 0. Assuming that no charge can flow across the gap, the end of ring which has excess of positive charge and the magnitude of induced e.m.f. in the ring are respectively

    physics-General
    General
    physics-

    The north and south poles of two identical magnets approach a coil, containing a condenser, with equal speeds from opposite sides. Then

    The north and south poles of two identical magnets approach a coil, containing a condenser, with equal speeds from opposite sides. Then

    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.