The capacity of a capacitor increases when the dielectric material between its plates is replaced by mica, as mica has a dielectric constant greater than that of air. The correct answer is:(c) becomes 6 times. The dielectric constant of mica ...

The electrical capacity of Earth is approximately 711 µF. This value is related to the Earth’s ability to store electrical charge, and it’s derived from the Earth’s surface area, which acts as a conductive sphere in the Earth’s electric field.

The capacitance C of a capacitor is given by C = Q/V. If the charge Q is doubled but the voltage V remains unchanged, the capacitance C remains the same. Thus, k = 1, and the correct answer is (b) ...

When a conductor is placed in an electric field, free electrons redistribute to cancel the internal field, making the electric field inside the conductor zero. Thus, the correct answer is (d) zero. Class 12th Science Physics NCERT MCQ Questions NCERT ...

The potential difference in a uniform electric field is given by V = E × d. Given E = 100 N/C and d = 5 cm = 0.05 m, we get V = 5 V. Thus, the correct answer is ...