(b) Potential lost by one is equal to potential gained by the other When two capacitors charged to different potentials are connected, charge redistributes until both capacitors reach a common potential. The charge lost by one capacitor is equal to ...
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The energy stored in a condenser is proportional to the square of the potential. When the potential is doubled, the energy increases by a factor of four. Hence, the correct answer is 4 times, corresponding to option (b) 4. Class ...
(a) increases. When capacitors are connected in parallel, their total or equivalent capacitance is the sum of their individual capacitances. This increases the overall capacitance, allowing the system to store more charge at the same voltage. Class 12th Science Physics ...
(c) charge When capacitors are connected in series, the same charge flows through each capacitor. However, the potential difference across each capacitor may vary depending on its capacitance and the overall capacitance is less than the smallest individual capacitor in ...
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 ...
Since points A and B lie on the same equipotential surface, the potential difference between them is zero. Work done in moving a charge across an equipotential surface is given by: W = qΔV Since ΔV = 0, the ...