Homework Answers
A square loop of wire with side length 10 cm is moving to the right with...
A square loop of wire with side length 10 cm is moving to the right with constant speed of 16 m/s. The loop has total resistance of 0.8 ohms. It begins in a region with no magnetic field, then enters a region of magnetic field (wider than 10 cm) with a strength of 0.5 T pointing into the page. Finally it leaves the field. 21) While entering the field what is the direction of the induced current as seen from above...
Problem 5 (10 points A 3 phase induction machine is mechanically coupled to a dc shunt...
Problem 5 (10 points A 3 phase induction machine is mechanically coupled to a dc shunt machine. The rating and parameters of the machines are as follows: Induction machine 3 phase, 5 kVA, 208 V, 60 Hz, four-pole, 1746 rpm (equivalent circuit shown below) Air gap DC machine: (dc shunt machine shown below) 220 V, 5 kW, 1750 rpm R.-0.4 ?, Rf,-1000, Rfc-100? SW tw The induction machine is connected to a 3 phase, 208 V, 60 Hz supply, and...
1. The electric circuit in the diagram on the left, below, consists of a wire (without...
1. The electric circuit in the diagram on the left, below, consists of a wire (without resistance) and a 5.0 2 resistor. Current is driven through the circuit by a changing magnetic field that fills the area inside of the circuit and points into the paper, as shown Magnetic field as a function of time T o ® ® ® 40.0 cm Magnetic field in tesla 0.02 Time in seconds 0.C 0.01 0.03 70.0 cm The external magnetic field points...
PLEASE HELP ME WITH THIS!!!! Question 3: (33 points) Consider a rectangular metal loop where the...
PLEASE HELP ME WITH THIS!!!!
Question 3: (33 points) Consider a rectangular metal loop where the two long sides are 9.0 cm and the two short sides are 5.0 cm, as shown below. This loop is located at the edge of a region containing a constant 2.1 T magnetic field directed out of the page (represented by the dots, as shown below. The loop is then pulled out of the field with a force F to the right, which produces...
A circular loop of radius 5.0 cm and resistance 0.4 Ω lays in the horizontal XY...
A circular loop of radius 5.0 cm and resistance 0.4 Ω lays in the horizontal XY plane. A uniform magnetic field is established pointing upwards, that's to say, in the direction of the positive Z axis. At t = 0, the magnitude of the magnetic field is 120 mT, but then it is increasing at a rate of 40 mT/s. Find the induced current in the loop at t = 1 s, and discuss whether its direction is clockwise or...
Suppose you make a loop using your fingers and kept it stationary in a plane perpendicular...
Suppose you make a loop using your fingers and kept it stationary in a plane perpendicular to a uniform, but varying magnetic field. The nature of the magnetic field is indicated in the graph on the right. What will be the maximum emf generated in the loop made by your fingers? The radius of the loop is 2.0 cm. B (T) 6 5 4 3 2 1 t (ms) 0 0.2 0.4 0.6 0.8 1.0 Part A 0 0.0 V...
Choose the correct answer for each given situation using Lenz's Law (1 point) and explain the...
Choose the correct answer for each given situation using Lenz's Law (1 point) and explain the reason for choosing the answer you did (1 point): 1) A wire loop is being pulled through a uniform magnetic field that suddenly ends. What is the direction of the induced current? a) Clockwise b) Counterclockwise c) No induced current Explain your answer: O 2) What is the direction of the induced current if the B field suddenly increases while the loop is in...
MP3. Consider a dc circuit consisting of a battery of emf E = 9.0 V and...
MP3. Consider a dc circuit consisting of a battery of emf E = 9.0 V and two resistors R = 5.0 22 and R' = 15.0 22 as shown in the figure below. The magnitude of the current I1 flowing through point 1 is, 9.0 V 5.0 22 >I, Z 15.02 Soi A) 1.2 A B) 2.4 A C) 4.8 A D) 9.6 A E) 12.6 A MP4. An electron and a proton enter a region above the x-axis of...
The figure shows an initially uncharged capacitor connected to a resistor, in a uniform magnetic field...
The figure shows an initially uncharged capacitor connected to a
resistor, in a uniform magnetic field pointing into the page (-z
direction). Choose which changes to the system would cause the top
plate of the capacitor to become positively charged.
1)True False Rotating the circuit 90° counterclockwise around
the y axis.
2) True False Reversing the direction of the magnetic
field.
3) True False Increasing the magnetic field
strength.
4) True False Rotating the circuit clockwise around the
z axis.
5) True False Decreasing...
AlmF flat plate circular capacitor of radius 1 cm is charged to voltage V=1000 V. Its...
AlmF flat plate circular capacitor of radius 1 cm is charged to voltage V=1000 V. Its plates are then connected through a resistor R=1 Ohm. The magnetic field at its side (cylindrical) surface in the beginning of discharging equals: A. O OB.2T C. 20 mT OD. 1.5 Wb E. None of the above A cylinder solenoid of radius 1 cm having 500 turns carries clockwise electric current 1 A. It is placed in the external magnetic field of strength1 T...
Problem 5 (10 points A 3 phase induction machine is mechanically coupled to a dc shunt machine. The rating and parameters of the machines are as follows: Induction machine 3 phase, 5 kVA, 208 V, 60 Hz, four-pole, 1746 rpm (equivalent circuit shown below) Air gap DC machine: (dc shunt machine shown below) 220 V, 5 kW, 1750 rpm R.-0.4 ?, Rf,-1000, Rfc-100? SW tw The induction machine is connected to a 3 phase, 208 V, 60 Hz supply, and...
1. The electric circuit in the diagram on the left, below, consists of a wire (without resistance) and a 5.0 2 resistor. Current is driven through the circuit by a changing magnetic field that fills the area inside of the circuit and points into the paper, as shown Magnetic field as a function of time T o ® ® ® 40.0 cm Magnetic field in tesla 0.02 Time in seconds 0.C 0.01 0.03 70.0 cm The external magnetic field points...
PLEASE HELP ME WITH THIS!!!!
Question 3: (33 points) Consider a rectangular metal loop where the two long sides are 9.0 cm and the two short sides are 5.0 cm, as shown below. This loop is located at the edge of a region containing a constant 2.1 T magnetic field directed out of the page (represented by the dots, as shown below. The loop is then pulled out of the field with a force F to the right, which produces...
Suppose you make a loop using your fingers and kept it stationary in a plane perpendicular to a uniform, but varying magnetic field. The nature of the magnetic field is indicated in the graph on the right. What will be the maximum emf generated in the loop made by your fingers? The radius of the loop is 2.0 cm. B (T) 6 5 4 3 2 1 t (ms) 0 0.2 0.4 0.6 0.8 1.0 Part A 0 0.0 V...
Choose the correct answer for each given situation using Lenz's Law (1 point) and explain the reason for choosing the answer you did (1 point): 1) A wire loop is being pulled through a uniform magnetic field that suddenly ends. What is the direction of the induced current? a) Clockwise b) Counterclockwise c) No induced current Explain your answer: O 2) What is the direction of the induced current if the B field suddenly increases while the loop is in...
MP3. Consider a dc circuit consisting of a battery of emf E = 9.0 V and two resistors R = 5.0 22 and R' = 15.0 22 as shown in the figure below. The magnitude of the current I1 flowing through point 1 is, 9.0 V 5.0 22 >I, Z 15.02 Soi A) 1.2 A B) 2.4 A C) 4.8 A D) 9.6 A E) 12.6 A MP4. An electron and a proton enter a region above the x-axis of...
The figure shows an initially uncharged capacitor connected to a
resistor, in a uniform magnetic field pointing into the page (-z
direction). Choose which changes to the system would cause the top
plate of the capacitor to become positively charged.
1)True False Rotating the circuit 90° counterclockwise around
the y axis.
2) True False Reversing the direction of the magnetic
field.
3) True False Increasing the magnetic field
strength.
4) True False Rotating the circuit clockwise around the
z axis.
5) True False Decreasing...
AlmF flat plate circular capacitor of radius 1 cm is charged to voltage V=1000 V. Its plates are then connected through a resistor R=1 Ohm. The magnetic field at its side (cylindrical) surface in the beginning of discharging equals: A. O OB.2T C. 20 mT OD. 1.5 Wb E. None of the above A cylinder solenoid of radius 1 cm having 500 turns carries clockwise electric current 1 A. It is placed in the external magnetic field of strength1 T...
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