1. The correct answer is (d) zero. When a conductor is placed in an electric field, free electrons within it redistribute to cancel the external field inside. This results in electrostatic equilibrium, where the net electric field inside the conductor becomes zero. This phenomenon ensures no electric fRead more

    The correct answer is (d) zero.
    When a conductor is placed in an electric field, free electrons within it redistribute to cancel the external field inside. This results in electrostatic equilibrium, where the net electric field inside the conductor becomes zero. This phenomenon ensures no electric force acts on charges within the conductor.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/

    See less
    • 15
  2. The potential difference (ΔV) in a uniform electric field is given by: ΔV = − E⋅d. where: E=100N/C (electric field strength) d = 5 cm = 0.05 m (displacement in the field direction) ΔV = −(100×0.05) ΔV = −5 V Since the question asks for the decrease in potential, the answer is: (c) 5 V For more visitRead more

    The potential difference (ΔV) in a uniform electric field is given by:

    ΔV = − E⋅d.
    where:
    E=100N/C (electric field strength)
    d = 5 cm = 0.05 m (displacement in the field direction)
    ΔV = −(100×0.05)
    ΔV = −5 V
    Since the question asks for the decrease in potential, the answer is: (c) 5 V

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/

    See less
    • 15
  3. (b) k = 1 The capacitance of a capacitor is a property of the capacitor itself and does not change when the charge is altered. The capacitance is related to the physical characteristics of the capacitor, such as the area of the plates and the distance between them, not the amount of charge stored. TRead more

    (b) k = 1
    The capacitance of a capacitor is a property of the capacitor itself and does not change when the charge is altered. The capacitance is related to the physical characteristics of the capacitor, such as the area of the plates and the distance between them, not the amount of charge stored. Therefore, the capacitance remains the same, so k = 1.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/

    See less
    • 14
  4. (c) 711 µ F The electrical capacity of the Earth is approximately 711 microfarads (µF). This is based on the Earth acting as a large spherical conductor, and the value is derived from the Earth's surface area and the electric potential of the Earth. For more visit here: https://www.tiwariacademy.comRead more

    (c) 711 µ F
    The electrical capacity of the Earth is approximately 711 microfarads (µF). This is based on the Earth acting as a large spherical conductor, and the value is derived from the Earth’s surface area and the electric potential of the Earth.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/

    See less
    • 19
  5. When two capacitors at different potentials are connected by a conducting wire, charge redistributes until they reach a common potential. The charge lost by one equals the charge gained by the other, but potential change depends on capacitance. Some energy is lost as heat due to charge redistributioRead more

    When two capacitors at different potentials are connected by a conducting wire, charge redistributes until they reach a common potential. The charge lost by one equals the charge gained by the other, but potential change depends on capacitance. Some energy is lost as heat due to charge redistribution.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/

    See less
    • 25