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.
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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 ...