Podcast
Questions and Answers
Which type of charge does a proton have?
Which type of charge does a proton have?
- Both positive and negative charges
- Neutral charge
- Positive charge (correct)
- Negative charge
What is the SI unit of charge?
What is the SI unit of charge?
- Ampere
- Volt
- Coulomb (correct)
- Ohm
Which type of charge does an electron have?
Which type of charge does an electron have?
- Positive charge
- Negative charge (correct)
- Neutral charge
- Both positive and negative charges
What happens when two charges of the same type (positive or negative) are brought close together?
What happens when two charges of the same type (positive or negative) are brought close together?
What happens when two charges of different types (positive and negative) are brought close together?
What happens when two charges of different types (positive and negative) are brought close together?
What is a conductor?
What is a conductor?
What is an insulator?
What is an insulator?
What happens to electrons in a conductor?
What happens to electrons in a conductor?
What is the simplest way to induce a charge on many common materials?
What is the simplest way to induce a charge on many common materials?
What is the charge of a neutron?
What is the charge of a neutron?
Which object ends up with a net positive charge when two objects made of unlike materials are rubbed together?
Which object ends up with a net positive charge when two objects made of unlike materials are rubbed together?
What happens to the total charge when two objects made of unlike materials are rubbed together?
What happens to the total charge when two objects made of unlike materials are rubbed together?
What is polarization?
What is polarization?
What are the three types of polarization?
What are the three types of polarization?
What is permanent polarization?
What is permanent polarization?
What is induced polarization?
What is induced polarization?
What happens to charges in a conductor during induced polarization?
What happens to charges in a conductor during induced polarization?
What happens to charges in an insulator during induced polarization?
What happens to charges in an insulator during induced polarization?
What is the net charge of an object that is polarized?
What is the net charge of an object that is polarized?
What is the name for molecules that have a permanent separation of charge within them?
What is the name for molecules that have a permanent separation of charge within them?
According to Coulomb's law, the force between two electric charges is directly proportional to the product of the charges and inversely proportional to their separation squared. Which equation represents Coulomb's law?
According to Coulomb's law, the force between two electric charges is directly proportional to the product of the charges and inversely proportional to their separation squared. Which equation represents Coulomb's law?
What is the magnitude of the electric force between two charges of magnitude $q_1 = 2 \mu C$ and $q_2 = 3 \mu C$ separated by a distance of 2 meters?
What is the magnitude of the electric force between two charges of magnitude $q_1 = 2 \mu C$ and $q_2 = 3 \mu C$ separated by a distance of 2 meters?
If the charge $q_2$ in the previous question is negative, how would the direction of the electric force change?
If the charge $q_2$ in the previous question is negative, how would the direction of the electric force change?
What is electrocardiography (ECG) used for?
What is electrocardiography (ECG) used for?
What does an electrocardiogram (ECG) detect?
What does an electrocardiogram (ECG) detect?
What is the SI unit of charge?
What is the SI unit of charge?
What is the net charge of an object that is polarized?
What is the net charge of an object that is polarized?
What happens to charges in a conductor during induced polarization?
What happens to charges in a conductor during induced polarization?
What is the name for molecules that have a permanent separation of charge within them?
What is the name for molecules that have a permanent separation of charge within them?
What happens to electrons in a conductor?
What happens to electrons in a conductor?
Which of the following is true about the electrical signal generated at the sinoatrial (SA node) of the heart?
Which of the following is true about the electrical signal generated at the sinoatrial (SA node) of the heart?
What is the normal range of the pacemaking signal from the SA node in the heart?
What is the normal range of the pacemaking signal from the SA node in the heart?
What is the potential difference between the inside and outside of the cells of the outer membrane of the heart at the resting state?
What is the potential difference between the inside and outside of the cells of the outer membrane of the heart at the resting state?
What is the primary tool used for detecting abnormal heart rhythms?
What is the primary tool used for detecting abnormal heart rhythms?
What does the P wave on an electrocardiogram (ECG) represent?
What does the P wave on an electrocardiogram (ECG) represent?
What does the QRS complex on an electrocardiogram (ECG) represent?
What does the QRS complex on an electrocardiogram (ECG) represent?
What does the T wave on an electrocardiogram (ECG) represent?
What does the T wave on an electrocardiogram (ECG) represent?
What is the SI unit of capacitance?
What is the SI unit of capacitance?
What does the capacitance of a capacitor depend on?
What does the capacitance of a capacitor depend on?
What is the capacitance of 1 cm^2 of membrane that separates ions inside and outside a cell, with a dielectric constant of 8?
What is the capacitance of 1 cm^2 of membrane that separates ions inside and outside a cell, with a dielectric constant of 8?
Which of the following is true about the electrical signal in the heart?
Which of the following is true about the electrical signal in the heart?
What is the potential difference between the inside and outside of the cells in the outer membrane of the heart at the resting state?
What is the potential difference between the inside and outside of the cells in the outer membrane of the heart at the resting state?
What is the primary tool used for detecting abnormal heart rhythms?
What is the primary tool used for detecting abnormal heart rhythms?
What does the first bump (P wave) on an electrocardiogram (ECG) represent?
What does the first bump (P wave) on an electrocardiogram (ECG) represent?
What does the last bump (T wave) on an electrocardiogram (ECG) represent?
What does the last bump (T wave) on an electrocardiogram (ECG) represent?
What does the sharper feature in the middle (QRS complex) on an electrocardiogram (ECG) represent?
What does the sharper feature in the middle (QRS complex) on an electrocardiogram (ECG) represent?
What is the formula for the capacitance of a capacitor?
What is the formula for the capacitance of a capacitor?
What factors affect the capacitance of a capacitor?
What factors affect the capacitance of a capacitor?
What is the capacitance of 1 cm^2 of membrane with a dielectric constant of 8?
What is the capacitance of 1 cm^2 of membrane with a dielectric constant of 8?
What is the nerve cell's behavior similar to in terms of electrical conduction?
What is the nerve cell's behavior similar to in terms of electrical conduction?
What is the resting membrane potential of a nerve cell?
What is the resting membrane potential of a nerve cell?
During the active state of a nerve cell, what happens to the cell membrane permeability?
During the active state of a nerve cell, what happens to the cell membrane permeability?
What is the approximate duration of an action potential in a nerve cell?
What is the approximate duration of an action potential in a nerve cell?
What is the primary mechanism responsible for the exchange of substances between the cell interior and the environment?
What is the primary mechanism responsible for the exchange of substances between the cell interior and the environment?
What is the role of the Na-K pump in a nerve cell?
What is the role of the Na-K pump in a nerve cell?
What is the range of the resting membrane potential of a nerve cell?
What is the range of the resting membrane potential of a nerve cell?
What is the polarity of the charge across the membrane during each stage of the nerve cell's electrical potential?
What is the polarity of the charge across the membrane during each stage of the nerve cell's electrical potential?
What is the primary factor that determines the signal conduction velocity along a nerve axon?
What is the primary factor that determines the signal conduction velocity along a nerve axon?
What happens to the potential difference across the capacitors as one goes farther from the stimulus?
What happens to the potential difference across the capacitors as one goes farther from the stimulus?
What is the approximate time required for the Na-K pump to restore the ions in a nerve cell?
What is the approximate time required for the Na-K pump to restore the ions in a nerve cell?
What is the SI unit of electric current?
What is the SI unit of electric current?
What is Ohm's law?
What is Ohm's law?
What is the opposition to the flow of electrical current through an object known as?
What is the opposition to the flow of electrical current through an object known as?
What are materials that do not obey Ohm's law known as?
What are materials that do not obey Ohm's law known as?
What is the approximate capacitance of cell membranes?
What is the approximate capacitance of cell membranes?
What is the name for a two-molecule thick membrane formed from a phosphate group and a hydrocarbon chain?
What is the name for a two-molecule thick membrane formed from a phosphate group and a hydrocarbon chain?
What are materials called when the potential difference and the current are directly proportional?
What are materials called when the potential difference and the current are directly proportional?
What is the SI unit of electrical resistance?
What is the SI unit of electrical resistance?
What is the formula for electric resistance?
What is the formula for electric resistance?
What is the formula for finding the electric resistance?
What is the formula for finding the electric resistance?
