Arectangular loop of wire with width w = 5 cm, length l = 10cm, mass m = 40 g, and resistance r = 20 mω has an initial velocity v0 = 1 m/s to the right. it crosses from a region with zero magnetic field to a region with b = 2t pointing out of the page. how far does the loop penetrate into the magnetic field?

The loop penetrate 4 cm into the magnetic field.

Explanation:

Given that,

Width w= 5 cm

Length L= 10 cm

mass m = 40 g

Resistance R = 20 mΩ

Initial velocity = 1 m/s

Magnetic field = 2 T

We need to calculate the induced emf

Using formula of emf

Put the value into the formula

We need to calculate the current

Using Lenz's formula

We need to calculate the force

Using formula of force

Put the value into the formula

We need to calculate the acceleration

Using formula of acceleration

Put the value in to the formula

We need to calculate the distance

Using equation of motion

Hence, The loop penetrate 4 cm into the magnetic field.

e) none of the above answers are correct

a. are