A circular flexible loop of wire of radius \( r \) carrying a curre...

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A circular flexible loop of wire of radius \( r \) carrying a current \( I \) is placed in a uniform magnetic field \( B \) perpendicular to the plane of the circle so that wire comes under tension. If \( B \) is doubled, tension in the loop
(a) remains unchanged
(b) is doubled
\( \mathrm{P} \)
(c) is halved
(d) becomes 4 times
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