Which of these situations would generate electrical current in a wire? Check all that apply.
2 answers:
Answer:
moving a magnet into a solenoid
moving a magnet out of a solenoid
moving a solenoid in a magnetic field
Explanation:
A conduction coil wrapped around an iron core forms a solenoid. When current is passed through the coil, it generates magnetic field. Thus, solenoid is an electromagnet.
<u>From Faraday's law: A changing magnetic field induces electromotive force across a conduction wire placed in it.</u>
Induced emf is the rate of change magnetic flux.
Electric current can be generated suing a solenoid. When a magnet is moved in or out of the coil, current flows in the coil. This is because, a changing magnetic field induces emf across the coil. Current can also be generated by moving the solenoid into the magnetic field.
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Arrhenius' equation relates the dependence of rate constant of a chemical reaction to the temperature. The equation below is the Arrhenius equation
where k is the rate constant, T is the absolute temperature. As the temperature of the system increases, the rate constant also increases and vice versa.
Given:
mass = 6 kg
velocity = 4 m/s
To find:
Kinetic energy of the cart = ?
Formula used:
Kinetic energy =
Where m = mass of the cart
v = velocity with which the cart is moving
Solution:
Kinetic energy of the moving cart is given by,
Kinetic energy =
Where m = mass of the cart
v = velocity with which the cart is moving
Kinetic energy =
Kinetic energy = 48 Joule
Thus, the kinetic energy of the moving cart is 48 Joule.