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Questions and Answers
What is the definition of electric current in terms of charge flowing across a conductor?
What is the definition of electric current in terms of charge flowing across a conductor?
- Amount of charge in a conductor
- Intensity of electric field
- Velocity of charge carriers
- Ratio of charge to time interval (correct)
How is current defined when considering the limit of the time interval approaching zero?
How is current defined when considering the limit of the time interval approaching zero?
- Ratio of charge to time interval (correct)
- Electric field intensity
- Charge flowing per second
- Drift speed of conduction electrons
What is the SI unit of current?
What is the SI unit of current?
- Joule
- Ohm
- Ampere (correct)
- Coulomb
What happens to the current if the time interval in the definition of current is decreased?
What happens to the current if the time interval in the definition of current is decreased?
Which order of magnitude is typical for currents in domestic appliances?
Which order of magnitude is typical for currents in domestic appliances?
In atoms and molecules, why are electrons and nuclei bound to each other?
In atoms and molecules, why are electrons and nuclei bound to each other?
What kind of charged particles exist freely in nature in the upper strata of the atmosphere?
What kind of charged particles exist freely in nature in the upper strata of the atmosphere?
'Bulk matter is made up of many molecules.' What property of matter does this statement highlight?
'Bulk matter is made up of many molecules.' What property of matter does this statement highlight?
'An electric charge will experience a force if an electric field is applied.' What phenomenon does this statement describe?
'An electric charge will experience a force if an electric field is applied.' What phenomenon does this statement describe?
'Bulk matter is made up of many molecules.' How many molecules are approximately present in a gram of water?
'Bulk matter is made up of many molecules.' How many molecules are approximately present in a gram of water?
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