Physics, 28.09.2019 22:00 mv603177

As the external magnetic field decreases, an induced current flows in the coil. what is the direction of the induced magnetic field caused by this current?

Answers: 1

Show answers

Answers

Answer from: sara7946

As the external magnetic field decreases, an induced current flows in the coil. The direction of the induced magnetic field would be pointing to the screen. The flux through the coil is said to decrease. In order to counter this change, the coil would generate or produce a magnetic field that is induced that would be pointing to the same direction as the external field that is flowing which is into the the screen. This is according to Lenz's law or the right hand rule. It states that an induced current in a circuit that is due to the change or motion in magnetic field should be directed opposing to the change in the flux.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

The object's initial distance above the groundthe object's initial velocity

Another question on Physics

Physics, 21.06.2019 23:30

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Answers: 1

Answer

Physics, 22.06.2019 15:30

What can you increase the strength of an electromagnet by

Answers: 2

Answer

Physics, 22.06.2019 18:30

An object in mechanical equilibrium is an object

Answers: 2

Answer

Physics, 22.06.2019 19:20

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?

Answers: 1

Answer

You know the right answer?

As the external magnetic field decreases, an induced current flows in the coil. what is the directio...

Questions