Major Competitive Exams

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Q. What is the dimensional formula for work?
  • A. [M^1 L^2 T^-2]
  • B. [M^1 L^1 T^-1]
  • C. [M^0 L^2 T^-2]
  • D. [M^1 L^0 T^-2]
Q. What is the direction of conventional current? (2021)
  • A. From negative to positive
  • B. From positive to negative
  • C. Random direction
  • D. Depends on the circuit
Q. What is the direction of the electric field due to a negative point charge?
  • A. Away from the charge
  • B. Towards the charge
  • C. Perpendicular to the charge
  • D. None of the above
Q. What is the direction of the electric field due to a positive charge?
  • A. Towards the charge
  • B. Away from the charge
  • C. Perpendicular to the charge
  • D. None of the above
Q. What is the direction of the electric field due to a positive point charge?
  • A. Towards the charge
  • B. Away from the charge
  • C. Perpendicular to the charge
  • D. None of the above
Q. What is the direction of the induced current when a magnet is moved towards a coil?
  • A. Clockwise
  • B. Counterclockwise
  • C. No current
  • D. Depends on the magnet's polarity
Q. What is the direction of the induced current when the magnetic field through a loop is increasing?
  • A. Clockwise
  • B. Counterclockwise
  • C. No current
  • D. Depends on the field strength
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 conductor? (2019)
  • A. From North to South
  • B. From South to North
  • C. Clockwise
  • D. Counterclockwise
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 flowing in a circular loop when viewed from above? (2023)
  • A. Out of the plane
  • B. Into the plane
  • 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 bar magnet? (2023)
  • A. From south to north
  • B. From north to south
  • C. Circular
  • D. Random
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 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 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 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 direction of the magnetic field produced by a current-carrying wire when viewed from one end? (2023)
  • A. Always towards the wire
  • B. Always away from the wire
  • C. Depends on the direction of current
  • D. Always perpendicular to the wire
Q. What is the directrix of the parabola defined by the equation y^2 = 20x?
  • A. x = -5
  • B. x = 5
  • C. y = 5
  • D. y = -5
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
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