All Flashcards
How do you calculate total resistance in a series circuit?
Add the individual resistances:
How do you calculate total resistance in a parallel circuit?
Use the reciprocal formula:
How do you find the total current in a parallel circuit?
Sum the individual currents:
How do you find the total voltage in a series circuit?
Sum the individual voltages:
What is Ohm's Law?
What is the definition of Resistivity ()?
How much a material resists the flow of charge.
What is the definition of Resistance (R)?
The opposition to current flow in a circuit element.
What is the definition of Voltage (V)?
The electrical potential difference that drives current.
What is the definition of Current (I)?
The rate of flow of electric charge.
What is the definition of Charge (q)?
A fundamental property of matter that can be positive or negative.
What is the definition of Electrical Energy (W)?
Energy associated with electric fields and charges.
What is the definition of Electrical Power (P)?
The rate at which electrical energy is used or generated.
What happens to the current in a series circuit if the resistance increases?
The current decreases (Ohm's Law).
What happens to the total resistance if you add more resistors in series?
The total resistance increases.
What happens to the total resistance if you add more resistors in parallel?
The total resistance decreases.
What happens to the power dissipated by a resistor if the voltage across it increases?
The power increases ().
What happens to the current in a parallel circuit branch if the resistance of that branch increases?
The current in that branch decreases (Ohm's Law).