A 60 cm long wire is bent into a circle. The circle of wire is placed...
A 60 cm long wire is bent into a circle. The circle of wire is placed flat on a table and a uniform magnetic field is applied to the whole table which points upwards. The magnetic field has strength which varies with time t as B=0.025 t^2 T/s^2. The wire has a resistance of 45 ohms. what is the current induced in the circuit at t= 1.5s? In which direction does it flow?
Homework Answers
the
direction of induced current is clockwise which is in accordance
with lenz law
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A 60 cm long wire is bent into a circle. The circle of wire is
placed...
a wire of length 85 cm is bent into a circle and placed flat on a...
a wire of length 85 cm is bent into a circle and placed flat on a table. A current of 35 mA passes through the wire in a counter-clockwise direction (looking from the top). What is the magnitude and direction of the magnetic field at the center of the circle?
Problem 3 Part A A copper wire with resistance 0.010 Ω is shaped into a complete circle of radius R 10 cm and placed in a long solenoid so that the axis of the solenoid and the axis of the wire loop...
Problem 3 Part A A copper wire with resistance 0.010 Ω is shaped into a complete circle of radius R 10 cm and placed in a long solenoid so that the axis of the solenoid and the axis of the wire loop coincide. The current in the solenoid is turned on and then slowly decreased. The magnetic field strength is initially B 0.750 T and subsequently decreases in time at the constant rate -0.035 T/s. (a) Calculate the induced emf...
2) A straight wire is partially bent into the shape of a circle as shown below....
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
2) A straight wire is partially bent into the shape of a circle as shown below....
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
A conducting rod whose length is l = 30 cm is placed on a U-shaped metal wire that is connected to a light bulb having a resistance of 5.0 s as shown in the figure.
A conducting rod whose length is l = 30 cm is placed on a U-shaped metal wire that is connected to a light bulb having a resistance of 5.0 s as shown in the figure. The wire and the rod are in the plane of the page. A constant uniform magnetic field of strength 0.50 T is applied perpendicular to and out of the paper. An external applied force moves the rod to the left with a constant speed of...
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistance R of 8.0 Ω as shown in the figure.
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistance R of 8.0 Ω as shown in the figure. The wire and the rod are placed in the plane of the paper. A constant magnetic field of strength 0.40 T is applied perpendicular into the paper. An applied force moves the rod to the right with a constant speed of 6.0 m/s. What is the magnitude and direction of the...
A square wire wrapped 24 times with a length of 0.2 meters is placed in the...
A square wire wrapped 24 times with a length of 0.2 meters is placed in the x-y plane in a uniform magnetic field directed in the -z direction. The magnetic field changes in magnitude from 0.14 T to 0.38 T in a time of 0.3 seconds. What is the amount, in amps, and the direction of the average induced current if the resistance of the wire is 0.8 Ohms? Indicate clockwise by including a negative sign and counter-clockwise by not...
A circular coil of wire with a radius 4 cm and 150 Turns is placed in...
A circular coil of wire with a radius 4 cm and 150 Turns is placed in a uniform magnetic field of magnitude 0.6 T. The magnetic field is parallel to the area vector; I.e. perpendicular to the plane of the coil. A)What is the magnetic flux through the coil? B)The magnetic field is decreased to 0T in .1 seconds. What is the magnitude of the emf induced in the coil during this time interval?C) If the coil has a resistance...
problem #4 #7 4. Problem A long wire is bent to form a rectangular section and is placed in a region with a uniform...
problem #4 #7
4. Problem A long wire is bent to form a rectangular section and is placed in a region with a uniform magnetic id, as shown in Fig ure 27.4. The magnetic field is directed downward and has a magnitude of 2.5T. The wire carries a 25- A current. Find the net torque on the wire about the z-axis. 025m 5. Problem Figure 29.2 shows a stationary current loop next to a long, straight wire carrying a current...
A 43.0-cm wire is moving to the right at a speed of 7.90 m/s across two...
A 43.0-cm wire is moving to the right at a speed of 7.90 m/s across two parallel wire rails that are connected on the left side, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field which has a magnitude of 0.750 T and is directed into the screen. What is the emf induced in the wire? induced emf causes a current to flow in the circuit formed by the moving wire and the rails....
Problem 3 Part A A copper wire with resistance 0.010 Ω is shaped into a complete circle of radius R 10 cm and placed in a long solenoid so that the axis of the solenoid and the axis of the wire loop coincide. The current in the solenoid is turned on and then slowly decreased. The magnetic field strength is initially B 0.750 T and subsequently decreases in time at the constant rate -0.035 T/s. (a) Calculate the induced emf...
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
problem #4 #7
4. Problem A long wire is bent to form a rectangular section and is placed in a region with a uniform magnetic id, as shown in Fig ure 27.4. The magnetic field is directed downward and has a magnitude of 2.5T. The wire carries a 25- A current. Find the net torque on the wire about the z-axis. 025m 5. Problem Figure 29.2 shows a stationary current loop next to a long, straight wire carrying a current...
A 43.0-cm wire is moving to the right at a speed of 7.90 m/s across two parallel wire rails that are connected on the left side, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field which has a magnitude of 0.750 T and is directed into the screen. What is the emf induced in the wire? induced emf causes a current to flow in the circuit formed by the moving wire and the rails....
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