1.A long straight current wire is placed in a uniform magnetic field as shown.What is the direction of magnetic force on the current wire?(a) To left of page(b) To bottom of page(c) To right of page(d) To top of page2.A temperature of 158°F in Fahrenheit scale is equal toin Celsius scale.(a) 105.6°C(b) 226.8°C(c) 70°C(d) 431°C3.The primary winding of a transformer has 500 turns and its secondary has 5000 turns. If primary isconnected to ac supply of 20 V and 50 Hz, then secondary will have an output of(a) 2V and 5 Hz(b) 2V and 50HZ(c) 200V and 500HZ(d) 200V and 50HZOPTICAL FIBERFor an optical fiber, which of the following is a correct statement aboutrefractive index?COATINGCORE(a) Ncore > ndadding(b) Ndadding > ncore(c) ncore= Ncladding(d) Ncore = 1CLADÓINGbirdThe water waves in the figure are travelling at a speed of2.5 m/s. The time that it takes to reach the bird is5.(a) 2 s(b) 5 s5 m-(c) 4 s(d) 1 sA device used to convert, electrical energy into mechanical energy is(a) generator(b) motor(c) transformer(d) optical fiber7. In a sound wave, the compression is a region of,(a) high particle density and high pressure(b) high particle density and low pressure(c) Low particle density and low pressure(d) Low particle density and high pressure8.For an alternating current of amplitude 8A and frequency 50 Hz, the value of the current at a time0.003s is(a) 6.46A(b) 0 A(c) 0.13 A(d) 7.60A

A long straight current carrying wire is placed in a uniform magnetic field.

A long straight current wire is placed in a uniform magnetic field as shown. What is the direction of magnetic force on the current wire? (a) To left of page (b) To bottom of page (c) To right of page (d) To top of page

A long straight current wire is placed in a uniform magnetic field as shown. What is the direction of magnetic force on the current wire? (a) To left of page (b) To bottom of page (c) To right of page (d) To top of page

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter19: Magnetism

Section: Chapter Questions

Problem 53P: The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 A is 1.00 T. (a) At...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

100%

1.
A long straight current wire is placed in a uniform magnetic field as shown.
What is the direction of magnetic force on the current wire?
(a) To left of page
(b) To bottom of page
(c) To right of page
(d) To top of page
2.
A temperature of 158°F in Fahrenheit scale is equal to
in Celsius scale.
(a) 105.6°C
(b) 226.8°C
(c) 70°C
(d) 431°C
3.
The primary winding of a transformer has 500 turns and its secondary has 5000 turns. If primary is
connected to ac supply of 20 V and 50 Hz, then secondary will have an output of
(a) 2V and 5 Hz
(b) 2V and 50HZ
(c) 200V and 500HZ
(d) 200V and 50HZ
OPTICAL FIBER
For an optical fiber, which of the following is a correct statement about
refractive index?
COATING
CORE
(a) Ncore > ndadding
(b) Ndadding > ncore
(c) ncore= Ncladding
(d) Ncore = 1
CLADÓING
bird
The water waves in the figure are travelling at a speed of
2.5 m/s. The time that it takes to reach the bird is
5.
(a) 2 s
(b) 5 s
5 m-
(c) 4 s
(d) 1 s
A device used to convert, electrical energy into mechanical energy is
(a) generator
(b) motor
(c) transformer
(d) optical fiber
7. In a sound wave, the compression is a region of,
(a) high particle density and high pressure
(b) high particle density and low pressure
(c) Low particle density and low pressure
(d) Low particle density and high pressure
8.
For an alternating current of amplitude 8A and frequency 50 Hz, the value of the current at a time
0.003s is
(a) 6.46A
(b) 0 A
(c) 0.13 A
(d) 7.60A

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