Question

are these correct? if incorrect what's the explanation of the correct answer?

G admission require... Quill Bot | Al Parap... A solenoid has a loop density of 100 turns per cm. A current of 12 A flows through it. What is the magnitude of the magnetic field created inside the solenoid? O 201.9 mT 150.8 ml O 116.3 mT 179.2 mt Question 8 1 pts Which of these statements best describes the force on a positively charged particle in a magnetic field? Force is directly proportional to the particle's speed. Force is directly proportional to the square of the particle's speed. Force is inversely proportional to the square of the particle's speed. Force is inversely proportional to the particle's speed.

Answer 1

loop density 100 turns berom h = 100 turns 100 turns n n 100 turns 102 m h = 104 turns i comers through solenoid – – 12A Magnitude of the magnetic field Crased inside the solenoid B Mont - 45 4 107 x 10 x 104 x 12 10 3 7 B = 150.796 447 x 10 B 150.8 MT

(8 let charge q 21 velocity magnetic field & B magnetic force on the charsed particle q173) Fm magnitude 9 111 BI fino o - Angle between & and B clearly force. Iim x 13 Ans force is directly proportional to the parsicle's speed