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Questions and Answers
What is the primary function of static frictional force?
What is the primary function of static frictional force?
Kinetic frictional force acts on stationary objects.
Kinetic frictional force acts on stationary objects.
False
What does EMF stand for and what does it represent?
What does EMF stand for and what does it represent?
Electromotive force; it represents the total energy supplied per coulomb of charge by the cell.
Ohm's Law states that the potential difference across a conductor is directly proportional to the __________ in the conductor at constant temperature.
Ohm's Law states that the potential difference across a conductor is directly proportional to the __________ in the conductor at constant temperature.
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Match the terms with their definitions:
Match the terms with their definitions:
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The force that opposes the tendency of motion of a stationary object relative to a surface is called ______.
The force that opposes the tendency of motion of a stationary object relative to a surface is called ______.
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The force that opposes the motion of a moving object relative to a surface is known as ______.
The force that opposes the motion of a moving object relative to a surface is known as ______.
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The total energy supplied per coulomb of charge by the cell is referred to as ______.
The total energy supplied per coulomb of charge by the cell is referred to as ______.
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______ is the rate of flow of charge.
______ is the rate of flow of charge.
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According to Ohm's Law, the potential difference across a conductor is directly proportional to the ______ in the conductor at constant temperature.
According to Ohm's Law, the potential difference across a conductor is directly proportional to the ______ in the conductor at constant temperature.
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Study Notes
Static Frictional Force
- Opposes the initiation of motion of a stationary object relative to a surface.
- Acts in the opposite direction of the applied force.
- Magnitude is directly proportional to the normal force.
Kinetic Frictional Force
- Opposes the motion of a moving object relative to a surface.
- Acts in the opposite direction of the object's velocity.
- Magnitude is directly proportional to the normal force.
Electromotive Force (EMF)
- Represents the total energy supplied per unit charge (Coulomb) by an electrical source, like a battery or generator.
- Measured in volts (V).
- Determines the maximum potential difference across the source's terminals when no current flows.
Current
- Refers to the rate of flow of electric charge.
- Measured in Amperes (A).
- Defined as the amount of charge passing a point in a conductor per unit time.
- Mathematically expressed as I = Q/t (where I is the current, Q is the charge, and t is the time).
Ohm's Law
- States that the potential difference (V) across a conductor is directly proportional to the current (I) flowing through it, provided the temperature remains constant.
- Mathematically expressed as V = IR (where R is the resistance of the conductor).
- A fundamental law in electricity that describes the relationship between voltage, current, and resistance.
Static Friction
- The force that opposes the tendency of motion of a stationary object relative to a surface.
Kinetic Friction
- The force opposing the motion of a moving object relative to a surface.
Electromotive Force (EMF)
- Represents the total energy supplied per coulomb of charge by a cell.
Electric Current
- Defined as the rate of flow of charge.
Ohm's Law
- States that the potential difference across a conductor is directly proportional to the current in the conductor, provided the physical conditions remain constant, including temperature.
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Description
Explore key physics concepts such as static and kinetic frictional forces, electromotive force, and current. Understand the principles behind these forces and their relevance in everyday applications. This quiz is perfect for students looking to test their knowledge of basic physics topics.
