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Consider two hollow concentric spheres S...

Consider two hollow concentric spheres `S_(1)` and `S_(2)` enclosing charges 2Q and 4Q respectively, as shown in the figure.
Find out the ratio of the electric flux through them.

Text Solution

Verified by Experts

According to Gauss. theorem,
`phi(Sigmaq)/(epsilon_(0)epsilon_(r))propSigmaq`
`:.(phi_(S_(1)))/(phi_(S_(2)))=(2Q)/(2Q+4Q)=(2Q)/(6Q)=1/3`
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Knowledge Check

  • Two insulated spheres of radii R_1 and R_2 having changes Q_1 and Q_2 respectively are connected to each other. There is:

    A
    no change in the energy of the system
    B
    an increase in the energy of the system
    C
    always a decrease in the energy of the system
    D
    a decrease in the energy of the system unless `Q_1R_2=Q_2R_1`

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