A $22\mathrm{.}0-$cm$-$diameter coil consists of $28$ turns of circular

COPP

wire $2\mathrm{.}6$ mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of $8\mathrm{.}6510-3$ T$/$s$.$ Determine $($a$)$ the current in the loop, and

$($b$)$ the rate at which thermal energy is produced.