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1. Electric Charges and Fields
easy
$R$ ત્રિજયાના ગોળીય કવચમાં કેન્દ્રથી અંતર નો વિદ્યુતક્ષેત્ર $E$ વિરુધ્ધનો આલેખ કેવો થાય?
A

B

C

D

Solution
(a) Electric field due to a hollow spherical conductor is governed by following equation $E = 0,$ for $r < R$ …$(i)$
and $E = \frac{Q}{{4\pi {\varepsilon _0}{r^2}}}$ for $r \ge R$ ….$(ii)$
i.e. inside the conductor field will be zero and outside the conductor will vary according to $E \propto \frac{1}{{{r^2}}}$
Standard 12
Physics