All of the following are true regarding Lenz’s law except:
a)This law provides a physical interpretation of the minus sign in Faraday’s law.
b)According to this law, if the current in a solenoid is reduced then the induced EMF will act to further reduce the current.
c)According to this law, an increase in magnetic field through a solenoid will result in an EMF producing a current that acts to decrease the field.
d)According to this law, if a conducting bar is moving in a way that causes the magnetic flux through a circuit to change, the induced EMF will give rise to a current in the bar such that the magnetic force on it acts to slow down the bar.
Homework Answers
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All of the following are true regarding Lenz’s law except:
a)This law provides a physical interpretation...
Hint: Apply Faraday law of of electromagnetic induction. The induced electromotive force is the negative rate...
Hint: Apply Faraday law of of
electromagnetic induction. The induced electromotive force is the
negative rate of change of the magnetic flux. Magnetic flux is the
surface integral of the magnetic field through the specified
surface, which is usually a wire loop
a)The current flowing in a solenoid, of 400 turns, 20 cm length
& 4 cm diameter, changes with time according to the graph show
to right. Derive an expression for the strength of the induced
electric field inside...
please explain clearly why all answers are true Problem 6: A conducting rod with negligible resistance...
please explain clearly why all answers are true
Problem 6: A conducting rod with negligible resistance is pulled with constant velocity along conducting rails that also have negligible resistance. A uniform magnetic fleld shows A circuit is completed at one end of the rails with a resistor d 15 cm 00 m22 B-0.8 T V 10 m/s L 10 cm A What is the magnitude and direction of the electric current around the circuit? Explain in words why current flows...
(a) (4 marks) Two long, parallel, straight wires spaced d = 0.06 m apart carry currents 4 A and 7 A in opposite directi...
(a) (4 marks) Two long, parallel, straight wires spaced d = 0.06 m apart carry currents 4 A and 7 A in opposite directions. Copy the diagram at right showing the two wires and indicating the direction of the currents in each. (i) Draw a vector indicating the direction of the magnetic field caused by the first wire at the position of the second wire. (ii) Indicate the direction of the force experienced by the second wire due to this...
Magnetism 1. (4) An unknown particle travelling at a velocity of 2.20x106 m/s to the right...
Magnetism 1. (4) An unknown particle travelling at a velocity of 2.20x106 m/s to the right as seen by an observer, enters a region that has an electric field of magnitude 750 V/m pointed away from the observer. Ignore gravity for this question. (a) What is the direction and magnitude of the perpendicular magnetic field which would best cancel out the effect of the electric field so that the particle passes through undeflected? (b) If while travelling 0.200 m, with...
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...
help me with this true false concepts PHYS2326-TEST II Name ID 2. The magnetic force on...
help me with this true false concepts
PHYS2326-TEST II Name ID 2. The magnetic force on a moving charge q is parallel to both its velocity and its magnetic field. 3. A magnetic field will always exerts a force on any charge (or current) present in the field. 4. Two charges of equal magnitude but opposite signs moving in the same direction in the same field will experience magnetic forces in same directions. 5. RC circuits differ from DC circuits...
1. An electron moves in a circular path in the magnetic field of an electromagnet. The...
1. An electron moves in a circular path in the magnetic field of an electromagnet. The plune of the electron's Sicular path is parallel to the smooth vole faces of the electromagnet. In the region where the electron is moving the magnetic field is uniform and has magnitude 0,50 T. The electron moves with a speed of 1.5 x 10 m/s. a. If someone could observe the electron from the north pole of the electromagnet, would the electron inove clockwise...
please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field ass...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
Hint: Apply Faraday law of of
electromagnetic induction. The induced electromotive force is the
negative rate of change of the magnetic flux. Magnetic flux is the
surface integral of the magnetic field through the specified
surface, which is usually a wire loop
a)The current flowing in a solenoid, of 400 turns, 20 cm length
& 4 cm diameter, changes with time according to the graph show
to right. Derive an expression for the strength of the induced
electric field inside...
please explain clearly why all answers are true
Problem 6: A conducting rod with negligible resistance is pulled with constant velocity along conducting rails that also have negligible resistance. A uniform magnetic fleld shows A circuit is completed at one end of the rails with a resistor d 15 cm 00 m22 B-0.8 T V 10 m/s L 10 cm A What is the magnitude and direction of the electric current around the circuit? Explain in words why current flows...
(a) (4 marks) Two long, parallel, straight wires spaced d = 0.06 m apart carry currents 4 A and 7 A in opposite directions. Copy the diagram at right showing the two wires and indicating the direction of the currents in each. (i) Draw a vector indicating the direction of the magnetic field caused by the first wire at the position of the second wire. (ii) Indicate the direction of the force experienced by the second wire due to this...
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...
help me with this true false concepts
PHYS2326-TEST II Name ID 2. The magnetic force on a moving charge q is parallel to both its velocity and its magnetic field. 3. A magnetic field will always exerts a force on any charge (or current) present in the field. 4. Two charges of equal magnitude but opposite signs moving in the same direction in the same field will experience magnetic forces in same directions. 5. RC circuits differ from DC circuits...
1. An electron moves in a circular path in the magnetic field of an electromagnet. The plune of the electron's Sicular path is parallel to the smooth vole faces of the electromagnet. In the region where the electron is moving the magnetic field is uniform and has magnitude 0,50 T. The electron moves with a speed of 1.5 x 10 m/s. a. If someone could observe the electron from the north pole of the electromagnet, would the electron inove clockwise...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
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