Question 1

What is the wavelength used by a radio station that broadcasts with a carrier frequency of 920 kHz?

Accepted Answer

A) 22.6 m 
B) 226 m 
C) 326 m 
D) 175 m 
E) 276 m 
A) 22.6 m 
B) 226 m 
C) 326 m 
D) 175 m 
E) 276 m

Question 2

A certain electromagnetic field traveling in vacuum has a maximum electric field of 1200 V/m.What is the maximum magnetic field of this wave?

Accepted Answer

A) 3.4 × 10-4 T 
B) 4.0 × 10-6 T 
C) 2.2 × 10-5 T 
D) 9.6 × 10-6 T 
E) 8.7 × 10-6 T 
A) 3.4 × 10-4 T 
B) 4.0 × 10-6 T 
C) 2.2 × 10-5 T 
D) 9.6 × 10-6 T 
E) 8.7 × 10-6 T

Question 3

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field B is present.The bar is in motion with velocity ν.The polarity of the induced emf in terminals X and Y is:

Accepted Answer

A) X and Y are at the same potential 
B) X is positive and Y is negative 
C) Y is positive and X is negative 
A) X and Y are at the same potential 
B) X is positive and Y is negative 
C) Y is positive and X is negative

Question 4

Find the wavelength (in nm)of a 5.83 eV photon.

Accepted Answer

A) 213 nm 
B) 181 nm 
C) 234 nm 
D) 253 nm 
A) 213 nm 
B) 181 nm 
C) 234 nm 
D) 253 nm

Question 5

Situation 25.1
The following are positioned in sequence: A source of a beam of natural light of intensity Io;three ideal polarizers A,B,and C;and an observer.Polarizer axis angles are measured clockwise from the vertical,from the perspective of the observer.The axis angle of polarizer A is set at zero degrees (vertical),and the axis angle of polarizer C is set at 50 degrees.
-In Situation 25.1,the axis angle of polarizer B is set at 120°.The ratio of the intensity of the beam at the observer to the intensity of the source is closest to:

Accepted Answer

A) 0.015 
B) 0.020 
C) 0.025 
D) 0.030 
E) 0.035 
A) 0.015 
B) 0.020 
C) 0.025 
D) 0.030 
E) 0.035

Question 6

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field,perpendicular to the plane of the rails,is present.The bar is in motion with velocity ν.The induced current through the resistor R is:

Accepted Answer

A) zero 
B) from a to b 
C) from b to a 
A) zero 
B) from a to b 
C) from b to a

What is the wavelength used by a radio station that broadcasts with a carrier frequency of 920 kHz?

A certain electromagnetic field traveling in vacuum has a maximum electric field of 1200 V/m.What is the maximum magnetic field of this wave?

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field B is present.The bar is in motion with velocity ν.The polarity of the induced emf in terminals X and Y is:

Find the wavelength (in nm)of a 5.83 eV photon.

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field,perpendicular to the plane of the rails,is present.The bar is in motion with velocity ν.The induced current through the resistor R is:

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Motion in One Dimension

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Forces and Newtons Laws of Motion

Applying Newtons Laws

Circular Motion,orbits,and Gravity

Rotational Motion

Equilibrium and Elasticity

Momentum

Energy and Work

Using Energy

Thermal Properties of Matter

Fluids

Oscillations

Traveling Waves and Sound

Superposition and Standing Waves

Wave Optics

Ray Optics

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Electric Potential

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Exam 25: Electromagnetic Induction and Electromagnetic Waves

What is the wavelength used by a radio station that broadcasts with a carrier frequency of 920 kHz?

A certain electromagnetic field traveling in vacuum has a maximum electric field of 1200 V/m.What is the maximum magnetic field of this wave?

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field B is present.The bar is in motion with velocity ν.The polarity of the induced emf in terminals X and Y is:

Find the wavelength (in nm)of a 5.83 eV photon.

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field,perpendicular to the plane of the rails,is present.The bar is in motion with velocity ν.The induced current through the resistor R is:

Representing Motion

Motion in One Dimension

Vectors and Motion in Two Dimensions

Forces and Newtons Laws of Motion

Applying Newtons Laws

Circular Motion,orbits,and Gravity

Rotational Motion

Equilibrium and Elasticity

Momentum

Energy and Work

Using Energy

Thermal Properties of Matter

Fluids

Oscillations

Traveling Waves and Sound

Superposition and Standing Waves

Wave Optics

Ray Optics

Optical Instruments

Electric Fields and Forces

Electric Potential

Current and Resistance

Circuits

Magnetic Fields and Forces

Ac Electricity

Relativity

Quantum Physics

Atoms and Molecules

Nuclear Physics

Filters