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Physics Chapter 10 : Topic 1
Electric Field as a Field of Force
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Which statement best describes an electric field?
Reasoning: An electric field is the region around a charged body in which another charge experiences an electric force.
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An electric field is called a field of force because it:
Reasoning: A field of force is a region where an object experiences a force. An electric field exerts force on charges.
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Which of the following is an example of a field of force?
Reasoning: Electric, gravitational, and magnetic fields are examples of fields of force because they can exert forces on objects.
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A positively charged particle is placed near another positive charge. The force experienced by the particle is due to:
Reasoning: Charges create electric fields, and these fields exert forces on other charges.
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A charge placed in an electric field experiences a force because:
Reasoning: The electric field exerts a force on a charge according to the relationship $\mathbf{F = qE}$.
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Which observation provides evidence that an electric field exists around a charged object?
Reasoning: The presence of force on another charge indicates the existence of an electric field.
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The electric field around a charged particle can exist:
Reasoning: A charged object creates an electric field in the surrounding space regardless of whether another charge is present.
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A test charge is placed in an electric field and experiences a force. This proves that the electric field:
Reasoning: A field is called a field of force when it can exert force on an object.
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Which comparison correctly explains the similarity between gravitational and electric fields?
Reasoning: Gravitational and electric fields are non-contact fields that exert forces over a distance.
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A charged balloon attracts small pieces of paper. This phenomenon demonstrates the presence of:
Reasoning: The charged balloon creates an electric field that causes attraction of nearby charges in the paper.
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If no force acts on a test charge placed at a certain point, it indicates that:
Reasoning: Since $\mathbf{F = qE}$, zero force may mean the electric field is zero at that location.
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The direction of an electric field at a point is defined as the direction of:
Reasoning: By convention, electric field direction is the direction of force on a positive test charge.
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A negative charge placed in an electric field experiences a force:
Reasoning: Negative charges experience force opposite to the direction of the electric field.
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Why is an electric field considered a non-contact force field?
Reasoning: Electric fields exert forces over distances without direct contact between charges.
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Two charged objects are separated by a distance. The force between them is due to:
Reasoning: Charges create electric fields that interact and produce electric forces.
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Which statement about an electric field is correct?
Reasoning: Electric fields exert forces on all charged particles regardless of charge sign.
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If a charge is placed in a stronger electric field, the force on it will generally:
Reasoning: Since $\mathbf{F = qE}$, force increases when electric field strength increases for a fixed charge.
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Which situation best represents the action of an electric field?
Reasoning: A charged particle experiencing an electric force is a direct example of an electric field acting as a force field.
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A charged body creates an electric field around it because:
Reasoning: Electric charge creates a region around itself where other charges can experience force.
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Which statement is incorrect about an electric field?
Reasoning: Electric fields are non-contact fields and can act through space.
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Which of the following correctly identifies the source of an electric field?
Reasoning: Electric charges produce electric fields around them.
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If a charged particle is removed from an electric field, the electric field:
Reasoning: The electric field is produced by the source charge, not by the test charge.
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A small positive test charge is moved into an electric field. The force acting on it confirms that:
Reasoning: The ability to exert force on a charge makes an electric field a field of force.
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The main evidence for the existence of an electric field is:
Reasoning: A force acting on a charge demonstrates the presence of an electric field.
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An electric field is similar to a gravitational field because both:
Reasoning: Both are force fields that can act on objects without physical contact.
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