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  4. Assertion While applying Ampere's circuital law to given surfaces with same perimeter, the left hand side oint B ⋅ d l=μ0 i(t) has not changed but the right hand side is zero. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/6b72f343a7e4dc07429309025a0c604f-.png /> Reason No current passes through the surface.

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Q. Assertion While applying Ampere's circuital law to given surfaces with same perimeter, the left hand side $\oint B \cdot d l=\mu_{0} i(t)$ has not changed but the right hand side is zero.
image
Reason No current passes through the surface.

Electromagnetic Waves

Solution:

On applying Ampere's circuital law to such surfaces with the same perimeter, we find that the left hand side of equation $\oint B . d l=\mu_{0} i(t)$ has not changed but the right hand side is zero and not $\mu_{0} i$.
Since, no current passes through the surface.