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A precision laboratory resistor is made of a coil of wire 1.50 cm in diameter and 4.00 cm long, and it has 500 turns. (a) What is its self-inductance? (b) What average emf is induced if the 12.0 A current through it is turned on in 5.00 ms (one-fourth of a cycle for 50 Hz AC)? (c) What is its inductance if it is shortened to half its length and counter-wound (two layers of 250 turns in opposite directions)?

a. $7 \cdot 4 \times 10^{-5} \mathrm{H}$b. $17 \cdot 7 \times 10^{-2}$ volt e.mf

Physics 102 Electricity and Magnetism

Chapter 23

Electromagnetic Induction, AC Circuits, and Electrical Technologies

Electromagnetic Induction

University of Washington

Hope College

University of Winnipeg

Lectures

03:27

Electromagnetic induction …

07:07

In physics, electromotive …

03:17

A toroidal solenoid has 50…

02:52

04:09

06:36

A coil has 400 turns and s…

01:40

The inductance of a closel…

05:48

A solenoid of radius 2.50 …

02:32

An emf of $24.0 \mathrm{mV…

04:02

A coil with 150 turns has …

05:24

An air-filled toroidal sol…

04:29

(a) Calculate the self-ind…

01:42

At the instant when the cu…

02:51

A long solenoid has $n=400…

05:02

A coil 4.00 cm in radius, …

03:26

04:37

A square, single-turn wire…

02:30

The current in the winding…

04:30

A series ac circuit contai…

01:51

A solenoid of radius 2.5 c…

04:27

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Electromagnetic induction is the production of an electromotive force (emf) …

In physics, electromotive force (emf) is the voltage developed by a source o…

A toroidal solenoid has 500 turns, cross-sectional area $6.25 \mathrm{cm}^{2…

A toroidal solenoid has 500 turns, cross-sectional area 6.25 cm$^2$, and mea…

A coil has 400 turns and self-inductance 3.50 $\mathrm{mH}$ . The current in…

The inductance of a closely wound coil is such that an emf of3.00 $\math…

A coil has 400 turns and self-inductance 4.80 $\mathrm{mH}$ The current in t…

A solenoid of radius 2.50 $\mathrm{cm}$ has 400 turns and a length of $20.0 …

An emf of $24.0 \mathrm{mV}$ is induced in a 500 -turn coil when the current…

A coil with 150 turns has a magnetic flux of 50.0 $\mathrm{nT} \cdot \mathrm…

An air-filled toroidal solenoid has 300 turns of wire, a mean radius of $12.…

(a) Calculate the self-inductance of a 50.0 cm long, 10.0 cm diameter soleno…

At the instant when the current in an inductor is increasing at a rate of 0.…

A long solenoid has $n=400$ turns per meter and carries a current given by $…

A coil 4.00 cm in radius, containing 500 turns, is placed in a uniform magne…

A square, single-turn wire loop $\ell=1.00 \mathrm{cm}$ on a side is placed …

The current in the windings of a toroidal solenoid is 2.400 A. There are 500…

A series ac circuit contains a 250$\Omega$ resistor, a 15 $\mathrm{mH}$i…

A solenoid of radius 2.5 cm has 400 turns and a length of 20 cm. Find (a) it…

A series ac circuit contains a $250-\Omega$ resistor, a 15 -m $\mathrm{H}$ i…

00:55

Find the largest wavelength of light falling on double slits separated by 1.…

02:11

(a) A car generator turns at 400 rpm when the engine is idling. Its 300 -tur…

00:59

What is the power in diopters of a camera lens that has a 50.0 mm focal leng…

01:37

A motor operating on 240 V electricity has a 180 V back emf at operating spe…

02:17

Professional Application(a) Calculate the maximum rate at which a rocket…

03:40

Apply the loop rule to loop abcdefghija in Figure 21.55.

04:35

Integrated ConceptsHot air rises because it has expanded. It then displa…

01:25

Calculate the wavelength of light that has its third minimum at an angle of …

01:39

Figure 22.59What is the direction of a current that experiences the magn…

02:05

Apply the junction rule at point a in Figure 21.55.