How potential on the both the end points of B bulb is same - Physics - Current Electricity

Question

How potential on the both the end points of B bulb is same?

Debalina Deb · Accepted Answer

Solution
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"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_62b87d303ee8a%20jpg"
style="width: 1022px; height: 524px;">