To solve this problem we must first find the potential on the body which is given as a product between the number of turns, the area and the variation of the magnetic field as a function of time. Once the potential is found, we will apply Ohm's Law with which we can find the induced current on the body. Our values are,




a) The magnitude of average induced emf is given by

Here N =1
![\epsilon_{emf} = (1)(7.00 x 10^-4 m2)[\frac{(3.3 T - 0.5 T)}{(0.99s)}]](https://tex.z-dn.net/?f=%5Cepsilon_%7Bemf%7D%20%3D%20%281%29%287.00%20x%2010%5E-4%20m2%29%5B%5Cfrac%7B%283.3%20T%20-%200.5%20T%29%7D%7B%280.99s%29%7D%5D)

b) The magnitude of the induced current is

Here Resistance is



Therefore the induced current is 0.00108A
Bank turned help drivers maintain speed they keep the car from skidding
The answer is : We’ll see the bell move, but we won’t hear it ring. This is because light can travel through vacuum but sound cannot. Sound waves are vibrations of particles in any media, so sound requires a medium to travel, and it cannot travel in a vacuum as there is no particles to vibrate.
Answer:

Explanation:
is the angle between the velocity and the magnetic field. So, the magnetic force on the proton is:

A charged particle describes a semicircle in a uniform magnetic field. Therefore, applying Newton's second law to uniform circular motion:

is the centripetal force and is defined as:

Here
is the proton's speed and
is the radius of the circular motion. Replacing this in (1) and solving for r:

Recall that 1 J is equal to
, so:

We can calculate
from the kinetic energy of the proton:

Finally, we calculate the radius of the proton path:
