Question

Determine the current in the circuit. Determine what the frequency would need to be for the current to be maximized. 2. Consider a rectangular wire coil that is 50 cm wide by 15 cm tall. There are ten loops in the coil. Notice the 20 resistor in the bottom section of the coil. The rectangular loop is pulled apart by the sides so that it stretches into a very thin loop in 3 seconds as shown below. There is a 4 T magnetic field pointed out of the page. 50 cm 115cm Determine the current magnitude induced in the resistor. Determine the direction of the current through the resistor shown. 3. Consider three long wires perpendicular to this page. The first has a current of 20 Amps out of the page. The second which is 2 meters from the first has a current of 15

Answer 1

are a Initial = so cm x 15cm = 750cm² = 0.075 m² final = om? number of loops magnetic flux B= UT Resistance R= po ohm area sro will tory change flux of = Ge di 506 = 10x4x (0 - 0.075) Tm² induced and -86 of UOX0.075 volt 3 volt - Yox0.075 Direction of current to increase coming the corrent is anti-clock flex out to loop so = 3 voll wise. 3 = 1 volt current 7. emf R A 20 OOSA I = 0.05 A anti-clockwise current

According to lens's law induced current will oppose its cause so direction of current will be anti-clockwise.

Thanks for asking.