Major Competitive Exams

Q. What is the direction of the induced current when the magnetic field through a loop decreases?
  • A. Clockwise
  • B. Counterclockwise
  • C. No current
  • D. Depends on the field strength
Q. What is the direction of the magnetic field around a current-carrying wire as per the right-hand rule?
  • A. Clockwise
  • B. Counterclockwise
  • C. Radial
  • D. Tangential
Q. What is the direction of the magnetic field around a current-carrying wire?
  • A. Radially inward
  • B. Radially outward
  • C. Clockwise or counterclockwise depending on current direction
  • D. Perpendicular to the wire
Q. What is the direction of the magnetic field around a straight conductor carrying current, as per the right-hand rule?
  • A. Clockwise
  • B. Counterclockwise
  • C. Radially inward
  • D. Radially outward
Q. What is the direction of the magnetic field around a straight conductor carrying current? (2023)
  • A. From north to south
  • B. Clockwise
  • C. Counterclockwise
  • D. Radially outward
Q. What is the direction of the magnetic field around a straight current-carrying conductor?
  • A. From north to south
  • B. From south to north
  • C. Clockwise
  • D. Counterclockwise
Q. What is the direction of the magnetic field due to a current-carrying loop at its center?
  • A. Out of the plane
  • B. Into the plane
  • C. Clockwise
  • D. Counterclockwise
Q. What is the direction of the magnetic field inside a current-carrying circular loop? (2019)
  • A. Out of the plane
  • B. Into the plane
  • C. Clockwise
  • D. Counterclockwise
Q. What is the direction of the magnetic field inside a current-carrying solenoid? (2019)
  • A. From south to north
  • B. From north to south
  • C. Perpendicular to the axis
  • D. Radially outward
Q. What is the direction of the magnetic field inside a long straight current-carrying conductor?
  • A. Outward from the conductor
  • B. Inward towards the conductor
  • C. Circular around the conductor
  • D. No magnetic field present
Q. What is the direction of the magnetic field produced by a current-carrying loop using the right-hand rule?
  • A. Clockwise
  • B. Counterclockwise
  • C. Out of the plane
  • D. Into the plane
Q. What is the direction of the magnetic field produced by a current-carrying loop at its center?
  • A. Perpendicular to the plane of the loop
  • B. In the plane of the loop
  • C. Radially outward from the loop
  • D. Radially inward towards the loop
Q. What is the direction of the magnetic field produced by a current-carrying wire according to the right-hand rule?
  • A. Towards the wire
  • B. Away from the wire
  • C. Perpendicular to the wire in the direction of current
  • D. Perpendicular to the wire in the opposite direction of current
Q. What is the direction of the magnetic field produced by a current-carrying wire according to the Biot-Savart Law?
  • A. Along the wire
  • B. Perpendicular to the wire and the current
  • C. In the direction of the current
  • D. Opposite to the direction of the current
Q. What is the direction of the magnetic field produced by a current-carrying wire using the right-hand rule?
  • A. Towards the wire
  • B. Away from the wire
  • C. Clockwise
  • D. Counterclockwise
Q. What is the directrix of the parabola given by the equation y^2 = 8x?
  • A. x = -2
  • B. x = 2
  • C. y = -4
  • D. y = 4
Q. What is the directrix of the parabola y^2 = 8x?
  • A. x = -2
  • B. x = 2
  • C. y = -4
  • D. y = 4
Q. What is the discriminant of the equation 3x² - 12x + 12 = 0? (2023)
  • A. 0
  • B. 12
  • C. 36
  • D. 24
Q. What is the discriminant of the equation 3x² - 12x + 9 = 0? (2023)
  • A. 0
  • B. 9
  • C. 12
  • D. 36
Q. What is the distance between the center of a circle and a point on its circumference if the radius is 8 cm? (2023)
  • A. 8 cm
  • B. 16 cm
  • C. 4 cm
  • D. 0 cm
Q. What is the distance between the center of a circle and a point on its circumference if the radius is 12 cm? (2022)
  • A. 6 cm
  • B. 12 cm
  • C. 18 cm
  • D. 24 cm
Q. What is the distance between the centers of two circles with equations (x - 1)² + (y - 2)² = 9 and (x + 3)² + (y + 4)² = 16?
  • A. 5
  • B. 10
  • C. 8
  • D. 6
Q. What is the distance between the foci of the ellipse given by the equation 4x^2 + 9y^2 = 36?
  • A. 6
  • B. 4
  • C. 8
  • D. 2
Q. What is the distance between the foci of the ellipse x^2/25 + y^2/16 = 1?
  • A. 7
  • B. 8
  • C. 9
  • D. 10
Q. What is the distance between the parallel planes 2x + 3y - z = 5 and 2x + 3y - z = 10? (2021)
  • A. 5/√14
  • B. 10/√14
  • C. 15/√14
  • D. 20/√14
Q. What is the distance between the points (-1, -1) and (2, 3)? (2022) 2022
  • A. 5
  • B. 4
  • C. 6
  • D. 7
Q. What is the distance between the points (-1, -1) and (2, 3)? (2023)
  • A. 5
  • B. 4
  • C. 3
  • D. 6
Q. What is the distance between the points (0, 0) and (3, 4)?
  • A. 5
  • B. 4
  • C. 3
  • D. 6
Q. What is the distance between the points (1, 1) and (4, 5)?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Q. What is the distance between the points (1, 2) and (4, 6)?
  • A. 5
  • B. 3
  • C. 4
  • D. 6
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