प्रकृति हमें बहुत कुछ देती है, हम प्रकृति को क्या दे सकते हैं? इस कथन के प्रकाश में ‘लौट चलें प्रकृति की ओर’ विषय पर 250 शब्दों का एक अनुच्छेद लिखिए l
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Answers
Answer:
a
n
d
E
=Let F be the force applied to separate the plates of a parallel plate capacitor by a distance of Δx.
Hence, work done by the force to do so = FΔx
As a result, the potential energy of the capacitor increases by an amount given as uAΔx.
Where,
u = Energy density
A = Area of each plate
d = Distance between the plates
V = Potential difference across the plates
The work done will be equal to the increase in the potential energy i.e.,
Electric intensity is given by,
However, capacitance,
Charge on the capacitor is given by,
Q = CV
The physical origin of the factor, , in the force formula lies in the fact that just outside the conductor, field is E and inside it is zero. Hence, it is the average value, , of the field that contributes to the force.
Answer:
Escape velocity is the minimum velocity that a body must attain to escape the gravitational field of the earth. Suppose if we throw a ball,it will fall back.
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