Can you please explain how to solve these problems?

I can't understxand the equation in the explanation which leads to theCCW and CW how can they conclude like that by using that equation? Could you explain it thoroughly?

Thanks In advance.

Name: 1} A circular loop of wire is placed in a magnetic eld that points into the page as shown. i. The loop of wire is stretched, increasing its size. There is no change in the magnetic eld. The induced current during this process will be A. Clockwise 'b -, $1,\"; 4', Bind out, fine! CCW B. Counte rclockwise C. Zero li. Next, the strength of the magnetic eld is increased [but its direction remains unchanged]. The induced current during this process will be A. Clockwise B. Counterclockwise C. Zero 154' '. ind *. Bind Wt: find CCW 2} A standard motional emf setup in the xv consists of a constant, uniform magnetic eld which points into of the page and has magnitude 0.25 T. The circuit's entire resistance is 2 Ohms at the location shown. The movable rail [double-line on the right side of the circuit} is going right at a speed of 10 mis. l. Which side of the resistor is at a higher electric potential due to the induction effect? A- E M: ., on\