What is the primary function of a defibrillator in a medical emergency?
Voltage, Electric Energy, and Capacitors: Crash Course Physics

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Physics, Science, Chemistry, Engineering
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11th Grade - University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To monitor heart rate
To correct irregular heartbeats
To administer medication
To measure blood pressure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main purpose of a capacitor in an electrical circuit?
To generate electricity
To decrease voltage
To store energy
To increase current
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is electric potential energy related to voltage in a capacitor?
Voltage is unrelated to electric potential energy
Voltage is the product of electric potential energy and charge
Voltage is the difference in electric potential energy per unit charge
Voltage is the sum of electric potential energy and charge
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What shape do equipotential lines take around a point charge?
Hexagons
Squares
Triangles
Circles
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an electric dipole, how are the electric potentials from individual charges combined?
They are added
They are multiplied
They are subtracted
They are divided
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of a dielectric in a capacitor?
To decrease capacitance
To increase capacitance
To generate electricity
To reduce voltage
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is capacitance measured in a capacitor?
By dividing charge by voltage
By adding charge and voltage
By multiplying charge by voltage
By dividing voltage by charge
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