electric circuits Flashcards
What is an electric circuit?
An electric circuit is a closed loop that allows electric current to flow.
True or False: An open circuit allows current to flow.
False
Name the two types of electric circuits.
Series and parallel circuits.
In a series circuit, what happens to the total resistance if more resistors are added?
The total resistance increases.
What is Ohm’s Law?
Ohm’s Law states that Voltage = Current x Resistance.
Fill in the blank: The unit of electric current is _____ .
Ampere (A)
What is the role of a resistor in a circuit?
A resistor limits the flow of electric current.
True or False: In a parallel circuit, if one component fails, the others still function.
True
What is the formula for calculating total resistance in a series circuit?
R_total = R1 + R2 + R3 + …
What happens to the voltage in a series circuit?
The total voltage is divided among the components.
Define ‘voltage’.
Voltage is the electric potential difference between two points.
What is the unit of voltage?
Volt (V)
In a parallel circuit, how is the total current calculated?
I_total = I1 + I2 + I3 + …
Fill in the blank: The flow of electric charge is called _____ .
Current
What is the function of a battery in a circuit?
A battery provides the necessary voltage for the circuit.
True or False: Capacitors store electric charge.
True
What is the effect of adding more resistors in parallel?
The total resistance decreases.
What is a short circuit?
A short circuit is an unintended path that allows current to bypass a load.
What does a circuit breaker do?
A circuit breaker interrupts the flow of current in case of overload or fault.
Fill in the blank: The device that measures electric current is called an _____ .
Ammeter
In a circuit, what does a voltmeter measure?
A voltmeter measures the voltage across two points.
What is the relationship between power, voltage, and current?
Power (P) = Voltage (V) x Current (I).
What is the unit of power?
Watt (W)
In a series circuit, how does current behave?
The current is the same through all components.
What does ‘ground’ refer to in an electric circuit?
Ground is a reference point for voltage and a safety path for excess current.
True or False: Inductors store energy in the form of electric fields.
False
