In resistor xy (as shown in Fig.), find the direction of current with the help of Lenz’s law. (a) When the switch Z is closed for several minutes then open. (b) When coil P is brought close to coil Q while switch Z is closed. (c) The value of resistance R is decreased whereas the switch Z is closed.

In resistor xy (as shown in Fig.), find the direction of current with the help of Lenz’s law. (a) When the switch Z is closed for several minutes then open. (b) When coil P is brought close to coil Q while switch Z is closed. (c) The value of resistance R is decreased whereas the switch Z is closed.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 69AP: The conducting rod shown in the accompanying figure moves along parallel metal rails that are 25-cm...

See similar textbooks

Related questions

Q: A wire loop with a resistance, R = 0.160 Ohms is pulled to the right out of a region with a uniform…

A: The expression for the required force is,

Q: The figure shows a stationary conducting loop adjacent to a horizontal current-carrying wire. For…

A: By the right-hand thumb rule, to produce a counter-clockwise induced current circulates in the…

Q: (a) (b) (c) (d) B increasing B decreasing (e)

Q: The plane of a square coil of wire is perpendicular to the direction of a magnetic field. The coil…

Q: A rectangular loop shown in Fig 4 (b) with width of 20 cm is in a static magnetic field B = 0.8x²2.…

Q: Design a current loop that, when rotated in a uniform magnetic field of strength 0.10 T, will…

Q: A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field,…

Q: The current in a long solenoid of radius 7 cm and 17 turns/cm is varied with time at a rate of 6…

Q: 1. In a coil of resistance 100 2, a current is induced by changing the magnetic flux through it as…

Q: A conducting bar of mass m = 0.2 kg, length / = 0.5 m, and resistance R slides in a horizontal plane…

Q: Use Lenz’s law to determine the direction of induced current in each case.

A: Lenz Law: The direction of the induced current in the coil should be such that its induced magnetic…

Q: B 2a a 1. Find the current through the length PQ line a = 65.0 cm as shown. This circuit is placed…

Q: elow are two situations where a conducting loop is falling in a region of a erpendicular magnetic…

A: When a loop is moving in perpendicular magnetic field them emf is induced in it.the direction of…

Q: In a 280-turn automobile alternator, the magnetic flux in each turn is . = 2.50 x 10* cos wt, where…

A: The emf induced due to N closely spaced coils is given by Lenz's law:ε=-NdϕBdt………(1)where,ϕB is the…

Q: In a 240-turn automobile alternator, the magnetic flux in each turn is OR = 2.50 x 10** cos ot,…

Q: The current flows in the horizontal straight wire is i= ct + dt. For the numerical values given…

Q: 10 and 11 please

A: 10. When an emf is produced in a coil because of the change in current in a coupled coil, this…

Q: In the circuit shown, the switch is con- nected to position a for a long time, then thrown to…

Q: A metallic wire of uniform cross-section and resistance R is bent into a circle of radius a. The…

Q: 0.5m 500 0 05 m B= 25, 5cos(120nt – 30°) (T) 500 Q resistance is connected to the square shaped…

Q: If a bar magnet is dropped through a conducting loop with its South pole downward as shown in the…

A: Given data If a bar magnet is dropped through a conducting loop with its South pole downward as…

Q: (a) (b) (c) (d) B increasing B decreasing (e) (f) 1> 1>

A: Introduction: According to Lenz's law, the induced magnetic field is opposite to the direction of…

Q: Consider the orout shown in the figure (Figure 1). Swtoh S is diosed at time t 0, causing a current…

Q: The coil whose lengthwise cross section is shown in the accompanying figure carries a current I and…

A: Ampere's law: It is expressed as ∮B.→dl→ =Nμ0I Where, N: Number of turns of coil B: Magnetic field…

Q: A coil with an inductance of 2.0 H and a resistance of 10ohm is suddenly connected to an ideal…

Q: Determine the induced emf in the alternator as a function of time. (Assume is in V.) = (b)…

Q: A very large, superconducting solenoid such as one used in MRI scans, stores 1.00 MJ of energy in…

Q: The radius of the circle forming a coil of N=105 turns is given as r=4.3cm. The coil is placed in…

Q: A square coil of wire of side 2.85 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A: (a) Write the formula for the area of a rectangular coil.

Q: A coil with an inductance of 2.6 H and a resistance of 8.2 Ω is suddenly connected to an ideal…

Q: Consider the arrangement shown in the figure below where R = 8.00 Q, { = 1.10 m, and B = 2.00 T. B.…

Q: (1) ta

A: Given: r0=0.1 mv=0.015 m/sR=12 ΩB0=0.75 Tt=5 s

Q: The figure shows a bar of mass 0.2kg that can slide without friction on a pair of rails separated by…

A: Given: Mass m = 0.2 kg Distance l =1.20 m Resistance R =1 Ω Angle θ =25° Magnetic field H=0.5 T

Q: In the infinitely long straight wire and the rectanglular Loop with resistance R in the picture: a)…

A: Consider the diagram below.

Q: An air-cored solenoid has a cross section of diameter 10 cm and 60 cm long. It is wound with 1000…

Q: The current in a long solenoid of radius 7 cm and 17 turns/cm is varied with time at a rate of 6…

Q: Hence or otherwise obtain an expression for the density of charge carriers as n=I/eVA where symbols…

A: Vd

Q: A square wire loop 20 cm on a side, with resistance20 m , has its plane normal to a uniform magnetic…

Question

In resistor xy (as shown in Fig.), find the direction of current with the help of Lenz’s law.
(a) When the switch Z is closed for several minutes then open.
(b) When coil P is brought close to coil Q while switch Z is closed.
(c) The value of resistance R is decreased whereas the switch Z is closed.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Part (a)

Step 2

Part (b)

Step 4

Part (c)

Step 6

Step by step

Solved in 6 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

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?
Show that Equation 32.28 in the text Ls Kirchhoffs loop rule as applied to the circuit in Figure P32.56 with the switch thrown to position b.
A solenoid with 4 x 107turns/m has an iron core placed in it whose magnetic susceptibility is 4.0 x 103. (a) If a cent of 2.0 A flows through the solenoid, what is the magnetic field in the iron core? (b) What is the effective surface current formed by the aligned atomic current loops in the iron core? (c) What is the self-inductance of the filled solenoid?
The figure shows a stationary conducting loop adjacent to a horizontal current-carrying wire. For which of the following conditions will a counter-clockwise induced current circulate in the stationary loop? a) The current in the horizontal wire flows to the right and its value is increasing. b) The current in the horizontal wire flows to the right and its value is constant. c) The current in the horizontal wire flows to the left and its value is decreasing. d) The current in the horizontal wire flows to the left and its value is increasing. e) The current in the horizontal wire flows to the left and its value is constant.
Mass m = 1.75 kg is suspended vertically at rest by an insulating string connected to a circuit partially immersed in a magnetic field as in the figure below. The magnetic field has magnitude B = 2.40 T and the length ℓ = 0.600 m. A) Find the current I (in A) B)If = 115 V, find the required resistance R (in Ω)
A conducting rod with length L = 20 cm is being pulled along a longrotated U-shape conductor, with negligible resistance, as shown in the figure below.The magnetic field in the figure has a constant value of 30 mT and the constantvelocity at which the vertical rod is being pulled is 4.50 m/s. Given that the vertical conducting rod has a resistance of 7 Ω, find the minimum rate of energy input to thesystem to keep the rod moving at constant velocity?
A long solenoid of radius a with n turns per unit length is carrying a time-dependent current I(t) = I0 sin ωt where I0 and ω are constants. The solenoid is surrounded by a wire of resistance R that has two circular loops of radius b with b > a . Find the magnitude and direction of current induced in the outerloops at time t = 0 .
A coil with an inductance of 2.0 H and a resistance of 10ohm is suddenly connected to an ideal battery with e= 100 V. At 0.10 s after the connection is made, what is the rate at which (a) energy is being stored in the magnetic field, (b) thermal energy is appearing in the resistance, and (c) energy is being delivered by the battery?
A uniform conducting wire of length 12a and resistance R is wound up as a current-carrying coil in the shape of i) an equilateral triangle of side a; ii) a square if sides a and iii) a regular hexagon of sides a. The coil is connected to a voltage source V0. Find the magnetic moment of the coils in each case.
Consider the arrangement shown below. As the loop is moved to the right, a current is induced through the loop and the energy is dissipated in the resistor. The dissipated energy is supplied by a) work by a magnetic force on AB. b) a change in charge configurationc) work by a magnetic force on AD and BC d) a decrease in magnetic field energy e) the person moving the loop f) none of the above
In a 280-turn automobile alternator, the magnetic flux in each turn is ΦB = 2.50 10-4 cos ?t, where ΦB is in webers, ? is the angular speed of the alternator, and t is in seconds. The alternator is geared to rotate six times for each engine revolution. The engine is running at an angular speed of 1.00 103 rev/min. (a) Determine the induced emf in the alternator as a function of time. (Assume is in V.) = (b) Determine the maximum emf in the alternator. V
In which time interval will the changing-with-time magnetic field induce the greatest emf in a conducting loop? 1. 2 3 4 Both 1 and 3.