A straight conducting metal wire is bent in the given shape and the loop is closed. Dimensions are as shown in the figure. Now the assembly is heated at a constant rate $$~dT/dt\text{ }=\text{ }l{}^\circ C/s$$. The assembly is kept in a uniform magnetic field B=1 T, perpendicular into the paper. Find the current in the loop at the moment, when the heating starts. Resistance of the loop is $$10\Omega $$ at any temperature. Coefficient of linear expansion $$\alpha ={{10}^{-6}}/{}^{o}C$$.

Question

TuteeHUB · Accepted Answer

$$1.5\times {{10}^{-6}}\,A$$clockwise

TuteeHUB · Answer

$$1.5\times {{10}^{-6}}\,A$$ anticlockwise

TuteeHUB · Answer

$$0.75\times {{10}^{-6}}\,A$$ anticlockwise

TuteeHUB · Answer

$$0.75\times {{10}^{-6}}\,A$$clockwise

1.	A straight conducting metal wire is bent in the given shape and the loop is closed. Dimensions are as shown in the figure. Now the assembly is heated at a constant rate \[~dT/dt\text{ }=\text{ }l{}^\circ C/s\]. The assembly is kept in a uniform magnetic field B=1 T, perpendicular into the paper. Find the current in the loop at the moment, when the heating starts. Resistance of the loop is \[10\Omega \] at any temperature. Coefficient of linear expansion \[\alpha ={{10}^{-6}}/{}^{o}C\].
A.	\[1.5\times {{10}^{-6}}\,A\] anticlockwise
B.	\[1.5\times {{10}^{-6}}\,A\]clockwise
C.	\[0.75\times {{10}^{-6}}\,A\] anticlockwise
D.	\[0.75\times {{10}^{-6}}\,A\]clockwise
Answer» B. \[1.5\times {{10}^{-6}}\,A\]clockwise

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