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Teju Singh

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  1. Asked: December 12, 2024In: Class 12 Physics

    In a series LCR circuit, the voltage across an inductor, a capacitor and a resistor are 20 V, 20 V and 40 V, respectively, What is the phase difference between the applied voltage and the current in the circuit?

    Teju Singh
    Added an answer on December 18, 2024 at 6:00 am

    In a series LCR circuit, the voltages across the inductor (Vl = 20V) and capacitor (V c = 20V) cancel each other, making the circuit effectively resistive. Therefore, the phase difference between the applied voltage and the current is zero. For more visit here: https://www.tiwariacademy.com/ncert-soRead more

    In a series LCR circuit, the voltages across the inductor (Vl = 20V) and capacitor (V c = 20V) cancel each other, making the circuit effectively resistive. Therefore, the phase difference between the applied voltage and the current is zero.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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  2. Asked: December 10, 2024In: Class 12 Physics

    Relative permeability of a material .u^r = 0.5. Identify the nature of the magnetic material and wright its relation to magnetic susceptibility.

    Teju Singh
    Added an answer on December 18, 2024 at 5:59 am

    The material is diamagnetic because its relative permeability (μ r = 0.5) is less than 1. For a diamagnetic material, the magnetic susceptibility (χ) is related to relative permeability by χ = μr −1. Here, χ = −0.5. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/Read more

    The material is diamagnetic because its relative permeability (μ r = 0.5) is less than 1. For a diamagnetic material, the magnetic susceptibility (χ) is related to relative permeability by χ = μr −1. Here, χ = −0.5.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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  3. Asked: December 13, 2024In: Class 12 Physics

    How much average power, over a complete cycle, does an a.c.source supply to a capacitor?

    Teju Singh
    Added an answer on December 18, 2024 at 4:45 am

    The average power supplied by an AC source to a capacitor over a complete cycle is zero. This is because the current and voltage in a capacitor differ in phase by π/2, resulting in no net energy transfer. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

    The average power supplied by an AC source to a capacitor over a complete cycle is zero. This is because the current and voltage in a capacitor differ in phase by
    π/2, resulting in no net energy transfer.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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  4. Asked: December 12, 2024In: Class 12 Physics

    Difine capacitive reactance. write its SI units.

    Teju Singh
    Added an answer on December 18, 2024 at 4:28 am

    Capacitive reactance is the opposition offered by a capacitor to the flow of alternating current. It is given by the formula X c = 1/Cω, where C is the capacitance and ω is the angular frequency. Its SI unit is ohm (Ω). For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physRead more

    Capacitive reactance is the opposition offered by a capacitor to the flow of alternating current. It is given by the formula X c = 1/Cω, where C is the capacitance and ω is the angular frequency. Its SI unit is ohm (Ω).

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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  5. Asked: December 13, 2024In: Class 12 Physics

    For an ideal Inductor, connected across a sinusoidal a.c. voltage source, state which one of the following quantity is zero: (i) instantaneous power, (ii) average power over full cycle of the a.c. voltage source.

    Teju Singh
    Added an answer on December 17, 2024 at 11:45 am

    For an ideal inductor connected across a sinusoidal A.C. voltage source, the average power over the full cycle is zero. This is because the voltage and current are out of phase by π/2, resulting in no net energy transfer. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/phRead more

    For an ideal inductor connected across a sinusoidal A.C. voltage source, the average power over the full cycle is zero. This is because the voltage and current are out of phase by π/2, resulting in no net energy transfer.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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