Electromagnetic induction occurs only when the current in the primary coil is constant. true or false

Answers

Answer 1

Answer: yes its True that Electromagnetic induction occurs only when the current in the primary coil is constant.

Related Questions

a stroller is pushed from rest, accelerating at 500m/s. what is the velocity after it has traveled 6.32m?
Question 2 of 10Which illustration represents low accuracy and low precision?
Melody is riding her mountain bike along a trail with multiple hills. At the bottom of the second hill, she has 3200 J of kinetic energy. At the top of the third hill, when she is going the slowest, her potential energy measures 1650 J. Which statement below is true? A. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy from the environment is gained. B. The total amount of energy at the top is equal to the amount at the bottowm, but she gained some energy as she traveled due to a higher speed going down the first two hills. C. The total amount of energy at the bottom of the hill cannot be equal to the amount at the top, because some of the energy is lost.
L 10. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car?
What is the resistance of an object to moving or to stoppingA. GravityB. InertiaC. Gravitational Force

NEED ASAP PLEASE !! Billy drops a water balloon from the roof of his house. Since the balloon began with an original velocity of zero, how far above ground was the balloon dropped if it took 2.5 seconds to hit the ground?

A. 30.6 m
B. 122.5 m
C. 12.3 m
D. 49.0 m

Answers

Answer: The correct answer is option (A).

Explanation:

Initial velocity of the balloon = 0 m/s

let the distance covered by the balloon from roof to the ground= h

Time taken by the balloon to reach the ground = t = 2.5 seconds

Acceleration due to gravity = g =9.8 $m/s^2$

Using confuse equation of the motion:

$h=ut+(1)/(2)gt^2$

$h=0 m/s* 2.5 s+(1)/(2)*9.8 m/s^2* (2.5 s)^2=30.625 m\approx 30.6 m$

Hence, the correct answer is option (A).

The balloon was 30.65 meters above ground.

ANSWER: A

The process by which atoms are arranged to form a material with a crystal shape is called

Answers

Explanation:

The process by which atoms are arranged to form a material with a crystal shape is called crystallization.

With the help of crystallization process we can purify a solid compound.

For example, ice and snowflakes occur due to crystallization of water.

In this process, small quantity of desired solvent is added into the impure solid. Then it is heated to let the solid dissolve and after that it is cooled down so that crystals are formed. Then with the help of vacuum filtration pure solid is extracted.

Answer:

Crystallization is the correct answer.

Explanation:

A typical mirror in a person's house would be an example of a/an _______ mirror. A. concave
B. convex
C. angular
D. plane

Answers

A typical mirror in a person's house would be anexample of a/an plane mirror. Lenses and mirrors are different. Lenses is atransparent tool containing two curved surfaces used to refract images – eitherconverge or diverge. Mirrors on the otherhand, show what the real image is without distortion.

Penn Foster Students: PLane

The gases cast off by a dying star are called

Answers

Answer:

Planetary Nebula

Explanation:

A star has its own life cycle very similar to a human life cycle where it takes birth, grows up, becomes old and then dies. The life cycle of stars and human differ in the duration of cycle and end result.

When a star dies it can end up differently basis its mass. Here one of the ends of a star is mentioned where it casts off all the gases. Such type of situation will create a planetary nebula. One famous example of such nebula is Crab Nebula.

Planetary Nebulae hope that helps

Does a negative charge indicates a lack of free electrons in a body.

Answers

No. Electrons are negative, so if a body has negative charge is because it has excess of electrons.

a bullet of mass 40 gm is fired from a gun of mass 8 kg with a velocity of 800 m/s, calculate the recoil velocity of gu