Homework Answers
According to Faraday's law -
● An emf is induced around a closed loop if the magnetic flux through the loop changes with time. The magnitide of emf is proportional to the rate the magnetic flux changes with time.
The last option is correct.
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Question7 1 pts Which statement is correct regarding Faraday's Law? O An emf is induced around...
Q5. Faraday's law says that a) an emf is induced in a closed loop if the...
Q5. Faraday's law says that a) an emf is induced in a closed loop if the magnetic flux through the loop does not change (ε = lng) = 0) b) an emf is induced in a closed loop if the magnetic flux through the loop changes ΔΦ E = -1 At c) an emf is induced in a closed loop only if a constant current is made to flow through the loop first d) an emf is induced in a...
Learning Goal: To understand the terms in Faraday's law and to be able to identify the...
Learning Goal: To understand the terms in Faraday's law and to be able to identify the magnitude and direction of induced emf. Faraday's law states that induced emf is directly proportional to the time rate of change of magnetic flux. Mathematically, it can be written as E=???B?t, where E is the emf induced in a closed loop, and ??B?t is the rate of change of the magnetic flux through a surface bounded by the loop. For uniform magnetic fields the...
What is Faraday's Law? o It defines the induced voltage across a coil when the magnetic...
What is Faraday's Law? o It defines the induced voltage across a coil when the magnetic field going through it changes. o It gives the direction of the induced current going through a coil when the magnetic field going through it changes. O The potential difference across a resistor is proportional to both the resistance and the current going through it O The sum of all the current going into a junction has to equal the sum of all the...
1. Which of the following statements best describe Ampere's Law? a. The time rate of change...
1. Which of the following statements best describe Ampere's Law? a. The time rate of change in the voltage is proportional to the current. b. The voltage drop across a capacitor is directly proportional to current. C. The voltage drops across a resistor directly proportional to the emf. d. The voltage drops across a resistor directly proportional to the current. 2. Which of the following statements best describe Faraday's Law of induction? a. The time rate of change in the...
1. Which of the following statements best describe Ampere's Law? The time rate of change in...
1. Which of the following statements best describe Ampere's Law? The time rate of change in the voltage is proportional to the current. The voltage drop across a capacitor is directly proportional to current. The voltage drops across a resistor directly proportional to the emf. d. a. b. c. The voltage drops across a resistor directly proportional to the current. 2. Which of the following statements best describe Faraday's Law of induction? a. The time rate of change in the...
Faraday’s Law and Induced EMF The figure displays a rectangular loop of wire with sides x...
Faraday’s Law and Induced EMF
The figure displays a rectangular loop of wire with sides x and
y placed in a region where a uniform magnetic field ! exists. The
resistance of the loop is R. Initially the field is perpendicular
to the plane of the loop and is directed out of the page. The loop
can rotate about either the vertical or horizontal axis, passing
through the midpoints of the opposite sides, as shown.
1. Which of the following...
Question 1 Select the correct answer(s): When considering electromagnetic induction, Lenz's Law determines the magnitude of...
Question 1 Select the correct answer(s): When considering electromagnetic induction, Lenz's Law determines the magnitude of the emf induced across the ends of a coil of wire that is rotating in a magnetic field. The smaller the change in magnetic flux, the greater the induced emf. Faraday's Law can be used to calculate the magnitude of an induced emf. Electric current can be induced by a changing magnetic field. Submit Answer Tries 0/3
ignore 2.21 The relationship you discovered is called Faraday's Law and is written as A Equation...
ignore 2.21
The relationship you discovered is called Faraday's Law and is written as A Equation 1 E = At The negative sign will be discussed below. If the resistance in the rectangular closed loop is R, then the induced current in the loop is given by Equation 2 T = - 140 I RAT You have learned from this activity that a current will be induced in a closed loop of wire whenever the magnetic flux through the loop...
2.5 points For any flux change that takes place in a circuit, Faraday's law states that...
2.5 points For any flux change that takes place in a circuit, Faraday's law states that the magnitude of the emf induced in the circuit is proportional to which parameter? Save Answer 1. Voltage of the circuit the rate of change of flux O2 3 Current in the circuit 4. None of the above
1Calculate the induced emf created around a single loop with an area of 0.459 m2 if...
1Calculate the induced emf created around a single loop with an area of 0.459 m2 if the magnetic field which is directed straight through the loop changes from 15.25 T to 20.87 T in a time of 0.0037 seconds. 2Calculate the magnetic field inside a 7.26 cm long solenoid with 326 turns which carries a current of 4.43.
Q5. Faraday's law says that a) an emf is induced in a closed loop if the magnetic flux through the loop does not change (ε = lng) = 0) b) an emf is induced in a closed loop if the magnetic flux through the loop changes ΔΦ E = -1 At c) an emf is induced in a closed loop only if a constant current is made to flow through the loop first d) an emf is induced in a...
What is Faraday's Law? o It defines the induced voltage across a coil when the magnetic field going through it changes. o It gives the direction of the induced current going through a coil when the magnetic field going through it changes. O The potential difference across a resistor is proportional to both the resistance and the current going through it O The sum of all the current going into a junction has to equal the sum of all the...
1. Which of the following statements best describe Ampere's Law? a. The time rate of change in the voltage is proportional to the current. b. The voltage drop across a capacitor is directly proportional to current. C. The voltage drops across a resistor directly proportional to the emf. d. The voltage drops across a resistor directly proportional to the current. 2. Which of the following statements best describe Faraday's Law of induction? a. The time rate of change in the...
1. Which of the following statements best describe Ampere's Law? The time rate of change in the voltage is proportional to the current. The voltage drop across a capacitor is directly proportional to current. The voltage drops across a resistor directly proportional to the emf. d. a. b. c. The voltage drops across a resistor directly proportional to the current. 2. Which of the following statements best describe Faraday's Law of induction? a. The time rate of change in the...
Faraday’s Law and Induced EMF
The figure displays a rectangular loop of wire with sides x and
y placed in a region where a uniform magnetic field ! exists. The
resistance of the loop is R. Initially the field is perpendicular
to the plane of the loop and is directed out of the page. The loop
can rotate about either the vertical or horizontal axis, passing
through the midpoints of the opposite sides, as shown.
1. Which of the following...
Question 1 Select the correct answer(s): When considering electromagnetic induction, Lenz's Law determines the magnitude of the emf induced across the ends of a coil of wire that is rotating in a magnetic field. The smaller the change in magnetic flux, the greater the induced emf. Faraday's Law can be used to calculate the magnitude of an induced emf. Electric current can be induced by a changing magnetic field. Submit Answer Tries 0/3
ignore 2.21
The relationship you discovered is called Faraday's Law and is written as A Equation 1 E = At The negative sign will be discussed below. If the resistance in the rectangular closed loop is R, then the induced current in the loop is given by Equation 2 T = - 140 I RAT You have learned from this activity that a current will be induced in a closed loop of wire whenever the magnetic flux through the loop...
2.5 points For any flux change that takes place in a circuit, Faraday's law states that the magnitude of the emf induced in the circuit is proportional to which parameter? Save Answer 1. Voltage of the circuit the rate of change of flux O2 3 Current in the circuit 4. None of the above
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