Podcast
Questions and Answers
What is voltage a measure of between two bodies with different potential?
What is voltage a measure of between two bodies with different potential?
- The average of the potentials
- The sum of the potentials
- The difference in potential (correct)
- The product of the potentials
If one of the bodies has zero charge, how can the other body relate to it in terms of potential?
If one of the bodies has zero charge, how can the other body relate to it in terms of potential?
- Zero potential
- Positive or negative potential (correct)
- Only positive potential
- Only negative potential
What is the voltage difference between two bodies called?
What is the voltage difference between two bodies called?
- EMF ratio
- Potential contrast
- Voltage ratio
- Potential difference (PD) (correct)
How does doubling the resistance affect the current in a circuit with steady EMF?
How does doubling the resistance affect the current in a circuit with steady EMF?
How is resistance related to the length and cross-sectional area of a conductor?
How is resistance related to the length and cross-sectional area of a conductor?
What is the unit of electrical resistance?
What is the unit of electrical resistance?
What makes carbon the most suitable material for a rubbing connection with commutators or slip rings in generators and alternators?
What makes carbon the most suitable material for a rubbing connection with commutators or slip rings in generators and alternators?
Why is carbon the only non-metal solid that has significance as a conductor?
Why is carbon the only non-metal solid that has significance as a conductor?
What are the ions created when current is passed through some liquids?
What are the ions created when current is passed through some liquids?
What moves in opposite directions when current is passed through a liquid?
What moves in opposite directions when current is passed through a liquid?
Why is carbon suitable for rubbing connections despite having a resistance 2000–3000 times that of copper?
Why is carbon suitable for rubbing connections despite having a resistance 2000–3000 times that of copper?
Which metal is the best conductor of electricity?
Which metal is the best conductor of electricity?
What is the descending order of conductivity for the metals mentioned?
What is the descending order of conductivity for the metals mentioned?
What is commonly used as a baseline to compare the resistance of other conducting materials?
What is commonly used as a baseline to compare the resistance of other conducting materials?
Why are silver and gold used only in special applications?
Why are silver and gold used only in special applications?
Which metal is commonly used as a conductor in electrical cables?
Which metal is commonly used as a conductor in electrical cables?
Why are steel, aluminium, and other metals used as conducting mediums in aircraft and automobile structures and engines?
Why are steel, aluminium, and other metals used as conducting mediums in aircraft and automobile structures and engines?
What does the symbol 'R' represent in the context of electrical fundamentals?
What does the symbol 'R' represent in the context of electrical fundamentals?
What factors control the resistance of an object like a wire conductor?
What factors control the resistance of an object like a wire conductor?
What is the reciprocal of resistance called?
What is the reciprocal of resistance called?
How does the resistance of most materials change with temperature?
How does the resistance of most materials change with temperature?
Which unit is used to measure conductance?
Which unit is used to measure conductance?
What is the term for liquids that are able to conduct ionically?
What is the term for liquids that are able to conduct ionically?
Which type of solution exhibits weak conductivity according to the provided table?
Which type of solution exhibits weak conductivity according to the provided table?
What happens when electricity is passed through an ionic solution?
What happens when electricity is passed through an ionic solution?
Which type of compound conducts electricity poorly according to the table?
Which type of compound conducts electricity poorly according to the table?
What is the result of placing positive and negative electrodes in an electrolyte?
What is the result of placing positive and negative electrodes in an electrolyte?
What allows ions to carry electric current in an ionic solution?
What allows ions to carry electric current in an ionic solution?
