Q: When you enclose a steady current carrying loop, you can deduce the magnetic field at a point P away…
A: we know that, The magnetic intensity at any point due to a steady current in an infinitely long…
Q: A long, straight wire has a current that is increasing with time directed downward. A conductive…
A: A straight current carrying wire lies to the left of a conductive loop. The current increases with…
Q: Determine the e.m.f induced in a coil of 200m turns when there is a change of flux of 25mWb linking…
A: Given : Number of turns (N) = 200 Flux (dΦ) = 25 mWb = 0.025 Wb Time (dt) = 50 ms = 0.050 s
Q: Mutual induction), the current induced in the loop, will generate current in the straight conductor?
A: the current induced in the loop, will generate current in the straight conductor?
Q: The self-inductance of a solenoid increases under which of the following conditions?
A: When an electric current is passed through a solenoid, a coil of insulated wire wound on a…
Q: A transformer works on the principle of
A:
Q: How does the flux, time, and greater turns of a coil affect the induced emf?
A: Introduction :- Here we need to tell how the different factors affects the induced emf. This…
Q: Draw the direction of the current in the right loop so that the two loops attract. -H
A: Current flowing in same direction will attract the wires and in opposite direction will make the…
Q: what will happen if two circular conducting loop is placed into another circular conducting loop…
A:
Q: Why does it become more difficult to move a magnet towards a coil when the number of turns in the…
A: When a magnet with similar pole is moved towards the coil with large number of turns, experiences a…
Q: Due to the bar magnet being pulled away from the solenoid the induced pole that is created at…
A: According to Lenz’s law, the induced magnetic field will be induced such that it opposes the change…
Q: Consider A rod of length 40 cm moving with a velocity of 30 m/s to the left in a magnetic field of…
A: Given,
Q: Why is a generator armature harder to rotate when it is connected to a circuit and supplying…
A: It is a matter of energy conservation.
Q: For a square loop which has 30 turns that are 20 cm on a side, placed in a uniform magnetic field of…
A:
Q: How does the induced magnetic field at the center of the solenoid change with the number of turns?
A: In this problem, it is asking how does the induced magnetic field at the center of the solenoid…
Q: A wire loop moves at constant velocity without rotationthrough a constant magnetic field. The…
A: Wire loop is moving in a magnetic field
Q: A wire is carrying a current I as shown in the figure. A conducting loop is perpendicular direction…
A: in first question we determine the ans by using lenz law . it is physics question. ( i will answer…
Q: Why will there be no induced current for the second item?
A: Induced current due to magnetic field
Q: According to Lenz's law the direction of an induced current in a coil of resistance R will: be…
A: Solution:- According to the lenz's law; The current induced in a circuit due to change in magnetic…
Q: Next, we will investigate what happens when there are two loops. We will think about/investigate the…
A:
Q: A square loop 24.0 cm on a side has a resistance of 6.10 Ω It is initially in a 0.665-T magnetic…
A: Magnetic flux is the field lines passing through particular area when that area loop is kept…
Q: nagnet in the previous question is now plunged into a coil that has tu v, the induced current in the…
A: Thus emf induced is proportional to rate of change of magnetic flux.
Q: On which factors does the magnetic field of a solenoid depends?
A: Standard expression for the magnetic field (B) of a solenoid is given as, B=μ0×N×iL…
Q: The current in a long solenoid with 20 turns per centimeter of radius 3 cm is varied with time at a…
A:
Q: Stationary loop of radius a carries a steady current. A second loop whose radius is much smaller…
A: The stationary loop of radius a will produce a magnetic field along z-axis can be given by the…
Q: Upon which one or more of the following does the magnetic energy of a coil that carries a current…
A: The strength or intensity of a coils magnetic field depends on the following factors. The number of…
Q: In what sense can a transformer be considered an electrical lever? What does it multiply? What does…
A: A transformer is a device that is used to increase or decrease the voltage as required. Since this…
Q: The armature coil of a d.c. motor has a resistance of 0.2 N and is connected to a 120 V supply. Find…
A: Find the armature current. I=V-ER Here, V is the applied voltage, E is the emf, and R is the…
Q: induced=-NAD, At В What will increase the Voltage produced by a moving magnet? OIncreasing the area…
A: The induced voltage is given by the expression : Vinduced = - N ×∆ϕB∆t where ϕB = magnetic flux =…
Q: How does increasing the number of loops strengthen the magnitude of the induced EMF or electromotive…
A: The induced EMF is produced due to change in magnetic flux passing through any loop. The EMF will be…
Q: The net voltage change around any loop is zero. It means that:
A: Voltage or electric potential difference is the difference in the electric potential between the two…
Q: In a homopolar motor (like Faraday’s motor), what happens to the motion if the current is reversed?
A: A Homopolar motor is a direct current electric motor with two magnetic poles .The name Homopolar…
Q: The field outside the coils of the solenoid is nearly zero. Why?
A: Solenoids are long straight coil of wires used to generate nearly uniform magnetic fields similar to…
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- A long, rectangular loop of width w, mass m, and resistance R is at rest, with the plane of the loop parallel to the ground. Immediately to the left of the loop is a region of uniform magnetic field B→ that points out of the screen. At time t=0, a constant force F→ pushes the loop to the left, into the magnetic field region, as shown in the figure. Derive an expression for the speed v of the loop immediately after it enters the magnetic field region in terms of the given variables and the time t.A circular loop having a radius of R and having a current of current I was put in a uniform magnetic field with a strength of B and it is also pointing out of the page. An angle of 30° was made by the loop with respect to the positive x axis in such a way that the loop’s right hemisphere is above the xy-plane, whereas the left hemisphere is below. This is illustrated in the figure attached. From the choices, determine the loop’s potential energy and the magnitude of the torque it experiences.What is the direction of the magnetic field that produces themagnetic force on a positive charge as shown in each of thethree cases in the figure below, assuming B is perpendicularto v ?
- The current in the long, straight wire shown in the accompanying figure is given by, where I=I0sint I0=15Aand=120rad/s. What is she current induced in the rectangular loop at (a) t = 0 and (b) t=2.1103s The resistance of loop is 2.0 .The conducting rod shown in the accompanying figure moves along parallel metal rails that are 25-cm apart. The system is in a uniform magnetic field of strength 0.75 T, which is directed into the page. The resistances of the rod and the rails are negligible, but the section PQ has a resistance of 0.25 . (a) What is the emf (including its sense) induced in the rod when it is moving to tire right with a speed of 5.0 m/s? (b) What force is required to keep the rod moving at this speed? (c) What is the rate at which work is done by this force? (d) What is the power dissipated in the resistor?The current loop shown in the accompanying figure lies in the plane of the page, as does the magnetic field. Determine the net force and the net torque on the loop if I=10and B=1.5T .
- Consider the axial magnetic field Bv=0IR2/2(y2+R2)3/2 of the circular current loop shown below. (a) Evaluate aaBydy Also show that limaaaBydy=0I (b) Can you deduce this limit without evaluating the integral? (Hint: See the accompanying figure.)The circular conducting loops shown in the accompanying figure are parallel, perpendicular to the plane of the page, and coaxial. (a) When the switch S is dosed, what is the direction of the cun’ent induced in D? (b) When the switch is opened, what is the direction of the current induced in loop D?A moveable (massless and frictionless) bar with a length of L = 11/50 m is being moved at a constant velocity of 62/10 m/s from left to right along two conducting rails by an external force, F, as shown inthe Figure. If the system is immersed in a uniform magnetic field (out of the paper) with magnitude11/100 Tesla, What is the induced current and its direction of the loop if the resistance is 11/5 Ω ?
- A metal bar slides to the right under the action of an external force Fext, on a pair of parallel rails, without friction and conductors placed in a horizontal plane. The rails are separated by a distance L and are connected by a resistor R. We will assume that the resistance of the rails and the rod is negligible. The system is placed in a region with a uniform magnetic field B perpendicular to the page, and the induced current in the rod is observed to be directed down the page.a) If the rod is to slide with constant speed to the right, what must be the direction of the magnetic field B?b) If Fext = 10 N, R = 2ohm, L = 50 cm and v = 5 m / s, calculate the magnitude of the magnetic field to be applied.c) If now the external force is applied to the left and the rod moves to the left with the same speed, maintaining the same magnitude and direction of the magnetic field, in which direction does the induced current in the rod now go?A rectangular loop of dimensions l and w, shown below, moves with a constantvelocity v away from a long straight wire that carries a current I0. The loop has a totalresistance of R. Derive an expression that gives the current in the loop at the instant the nearside is a distance r from the wireConsider the rectangular loop in the figure below, which is fixed and under the influence of a uniform time-dependent magnetic field B (t). Show that the potential difference e (epsilon) induced in the loop is given by e = Acosθ db / dt, where A is the area of the loop.