eletricity Flashcards
(25 cards)
What is electricity?
Electricity is the flow of electric charge.
What is an electric circuit?
An electric circuit is a closed loop through which an electric current can flow.
What is the unit of electric current?
The unit of electric current is the ampere (A).
What is voltage?
Voltage is the difference in electric potential between two points.
What is resistance?
Resistance is the opposition to the flow of electric current.
What is Ohm’s Law?
Ohm’s Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
What is the formula for calculating power in an electric circuit?
Power (P) = Voltage (V) x Current (I)
What is an insulator?
An insulator is a material that does not easily allow the flow of electric current.
What is a conductor?
A conductor is a material that allows the flow of electric current.
What is the symbol for a resistor in an electric circuit diagram?
The symbol for a resistor in an electric circuit diagram is a zigzag line.
True or False: Electric current flows from positive to negative.
False. Electric current flows from negative to positive.
What is a series circuit?
A series circuit is a circuit where the components are connected in a single path.
What is a parallel circuit?
A parallel circuit is a circuit where the components are connected in multiple paths.
What is an electric field?
An electric field is a region around a charged object where an electric force is exerted on other charged objects.
What is an electric current?
An electric current is the flow of electric charge through a conductor.
What is a diode?
A diode is a semiconductor device that allows current to flow in one direction only.
What is an electric motor?
An electric motor is a device that converts electrical energy into mechanical energy.
What is an electric generator?
An electric generator is a device that converts mechanical energy into electrical energy.
What is the purpose of a fuse in an electric circuit?
The purpose of a fuse in an electric circuit is to protect the circuit from overcurrent.
What is the unit of electric charge?
The unit of electric charge is the coulomb (C).
What is a capacitor?
A capacitor is a device that stores electrical energy in an electric field.
What is the symbol for a battery in an electric circuit diagram?
The symbol for a battery in an electric circuit diagram is two parallel lines.
What is the direction of conventional current flow?
The direction of conventional current flow is from positive to negative.
What is the SI unit of electrical resistance?
The SI unit of electrical resistance is the ohm (Ω).
