# magnetic field is changing with time as B=a+bt,radius of the circle is R resistance per unit length is lambda,what will the current induced in triangular loop?[SEE ATTACHMENT FOR FIGURE]

Apoorva Arora IIT Roorkee
8 years ago
The induced EMF is given by the formula
$\varepsilon=-\frac{\mathrm{d} \phi }{\mathrm{d} t}$
where $\phi$=B.A
therefore, here
$\varepsilon =-Ab$
and hence current i.e. $I=\frac{\varepsilon }{\lambda }$
i.e. $I=\frac{-Ab }{\lambda }$
Thanks and Regards
Apoorva Arora
IIT Roorkee