Explore the principles of magnetic fields generated by electric currents in this comprehensive physics lecture. Delve into the magnetic fields produced by straight wires, current loops, and solenoids. Learn how to calculate magnetic fields for various configurations, including parallel wires carrying opposite currents. Tackle practical examples, such as determining the number of wire turns needed in a solenoid to produce a specific magnetic field strength. Enhance your understanding of electromagnetism through detailed explanations and problem-solving techniques.
Overview
Syllabus
MAGNETIC FIELDS DUE TO CURRENTS
MAGNETIC FIELDS OF STRAIGHT WIRES
MAGNETIC FIELDS OF CURRENT LOOPS
MAGNETIC FIELDS OF SOLENOIDS
CALCULATING MAGNETIC FIELDS: STRAIGHT WIRES
CALCULATING MAGNETIC FIELDS: CURRENT LOOPS
CALCULATING MAGNETIC FIELDS: SOLENOIDS
Example: Two long, straight wires lie parallel to each other. They each carry a current of 5.0 A in opposite direction. What is the magnetic field at point P?
about 1 m. A typical field inside such a solenoid is about 11. How many turns of wire must the solenoid have to produce this field if the largest current the wire can carry is 100 A?
QUICKCHECK 24.14
Taught by
Spahn's Science Lectures
