4. A square loop of wire of side 15.0-cm is in a 0.125-T magnetic field oriented

Question

4. A square loop of wire of side 15.0-cm is in a 0.125-T magnetic field oriented perpendicular to the plane of the loop. There are 125 turns in the loop. If the field is reduced linecarly to-0.125 T in 5.25 ms, what is the average induced emf in the loop? 5. A square coil of side 5.48-cm in an ac generator rotates at 50.0 Hz and develops an of 225 V (ms). (a) If the coil contains 805 turns, find the magnitude of the emf magnetic field in which it rotates. (b) If the magnetic field were 0.186 T and the generator were to rotate at 60.0 Hz, what would be the rms emf developed by the eneratorkeael an 6. An ideal 0.300-kW transformer has 2185 turns on its primary coil and 115 turns on its secondary coil. (a) What type of transformer is this? (b) If the primary coil is connected to a 114-V source, what are the output voltage and current of the transformer?

Explanation / Answer

4) Average induced emf in the loop, emf_avg = N*A*dB/dt

= 125*0.15^2*(0.125 - (-0.125))/(5.25*10^-3)

= 134 volts

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.