Fjl Flashcards
(48 cards)
What is an electric circuit?
An electric circuit is a closed loop through which an electric current can flow.
True or False: In a series circuit, the current remains the same throughout the circuit.
True
What is the unit of electric current?
Ampere (A)
What is the formula for calculating resistance in an electric circuit?
Resistance (R) = Voltage (V) / Current (I)
In a parallel circuit, what happens to the voltage across each branch?
The voltage across each branch remains the same.
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)
True or False: The total resistance in a series circuit is equal to the sum of the individual resistances.
True
What is the unit of electric potential difference?
Volt (V)
In a series circuit, how does adding more resistors affect the total resistance?
Adding more resistors increases the total resistance.
What is the relationship between voltage, current, and resistance in an electric circuit?
Voltage = Current x Resistance
What is the role of a switch in an electric circuit?
A switch controls the flow of current in an electric circuit by opening or closing the circuit.
What is the SI unit of resistance?
Ohm (Ω)
True or False: The total resistance in a parallel circuit is always less than the smallest individual resistance.
True
What is the formula for calculating current in an electric circuit?
Current (I) = Voltage (V) / Resistance (R)
What is the symbol for a resistor in an electric circuit diagram?
A zigzag line
What does a capacitor do in an electric circuit?
A capacitor stores and releases electrical energy in an electric circuit.
What is the function of a diode in an electric circuit?
A diode allows current to flow in one direction only in an electric circuit.
What is the role of a fuse in an electric circuit?
A fuse protects the circuit from excessive current by melting and breaking the circuit.
What is Kirchhoff’s voltage law?
Kirchhoff’s voltage law states that the sum of the voltage drops in a closed loop is equal to the applied voltage in the loop.
What is the function of an ammeter in an electric circuit?
An ammeter measures the current flowing through a circuit.
What is the symbol for a battery in an electric circuit diagram?
A series of long and short parallel lines
What is the purpose of a resistor in an electric circuit?
A resistor limits the flow of current in an electric circuit.
What is the role of a voltmeter in an electric circuit?
A voltmeter measures the voltage difference between two points in a circuit.
