Question 1

A circuit breaker often serves the same purpose as a

Accepted Answer

A) battery 
B) fuse. 
C) capacitor. 
D) All of the above choices are correct. 
E) None of the above choices are correct. 
A) battery 
B) fuse. 
C) capacitor. 
D) All of the above choices are correct. 
E) None of the above choices are correct.

Question 2

A wire that carries an electric current

Accepted Answer

A) is electrically charged. 
B) may be electrically charged. 
C) is never electrically charged. 
A) is electrically charged. 
B) may be electrically charged. 
C) is never electrically charged.

Question 3

Alternating current is normally produced by a

Accepted Answer

A) battery. 
B) generator. 
C) both of these 
D) neither of these 
A) battery. 
B) generator. 
C) both of these 
D) neither of these

Question 4

A woman experiences an electrical shock.The electrons making the shock come from the

Accepted Answer

A) woman's body. 
B) ground. 
C) power plant. 
D) hairdryer. 
E) electric field in the air. 
A) woman's body. 
B) ground. 
C) power plant. 
D) hairdryer. 
E) electric field in the air.

Question 5

Stretch a copper wire so that it is thinner and the resistance between its ends

Accepted Answer

A) decreases. 
B) remains unchanged. 
C) increases. 
A) decreases. 
B) remains unchanged. 
C) increases.

Question 6

Electrons are made to flow in a wire when there is

Accepted Answer

A) an imbalance of charges in the wire. 
B) more potential energy at one end of the wire than the other. 
C) a potential difference across its ends. 
A) an imbalance of charges in the wire. 
B) more potential energy at one end of the wire than the other. 
C) a potential difference across its ends.

Question 7

An ampere is a unit of electrical

Accepted Answer

A) pressure. 
B) current. 
C) resistance. 
D) all of these 
E) none of these 
A) pressure. 
B) current. 
C) resistance. 
D) all of these 
E) none of these

Exam 23: Electric Current

A circuit breaker often serves the same purpose as a

A wire that carries an electric current

Alternating current is normally produced by a

A woman experiences an electrical shock.The electrons making the shock come from the

Stretch a copper wire so that it is thinner and the resistance between its ends

Electrons are made to flow in a wire when there is

An ampere is a unit of electrical

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

Momentum

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Atomic Nature of Matter

Solids

Liquids

Gases and Plasmas

Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Emission

Light Quanta

The Atom and the Quantum

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Filters