A wire loop carrying current I is placed in the \( \mathrm{X}-\mathrm{Y} \) plane as shown in th...

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A wire loop carrying current I is placed in the \( \mathrm{X}-\mathrm{Y} \) plane as shown in the figure
(a) If a particle with charge \( +\mathrm{Q} \) and mass \( \mathrm{m} \) is placed at the centre \( \mathrm{P} \) and given a velocity along NP (fig). Find its instantaneous acceleration
(b) If an external uniform magnetic induction field \( \overrightarrow{\mathrm{B}}-\mathrm{B} \hat{\mathrm{i}} \) is applied, find the torque acting on the loop due to the field.
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