20 flashcards · Shared on 19 August 2026 by AtomAI Library
Flip each card to check yourself.
What happens to the supply voltage in a series circuit?
It is shared between the components
What happens to the supply voltage in a series circuit?
It is shared between the components
What does the voltage between two points represent?
Energy transferred per unit charge
How is the total current entering a parallel combination related to the branch currents?
It equals the sum of the branch currents
For wires of the same material and thickness, which wire has the greater resistance?
The longer wire
How is a voltmeter connected when measuring the voltage across a resistor?
In parallel with the resistor
How does adding another resistor in parallel affect the total resistance of the circuit?
It decreases the total resistance
What is the SI unit of electrical resistance?
Ohm
At a fixed voltage, what happens to current if resistance increases?
Current decreases
What is electric current?
The rate of flow of electric charge
Which equation defines the resistance of a component?
R = V/I
For an ohmic conductor at constant temperature, how does current change when voltage is doubled?
It doubles
Which statement about current in a series circuit is correct?
It is the same through every component
Which equation gives the electrical power transferred by a component?
P = VI
How should an ammeter be connected to measure the current through a component?
In series with the component
Which quantity is the same across every branch of a parallel circuit?
Voltage
A resistor has 6 V across it and carries a current of 2 A. What is its resistance?
3 Ω
Which unit is used for electric current?
Ampere
How is the total resistance of resistors connected in series calculated?
By adding all the resistances
A charge of 12 C passes a point in 3 s. What is the current?
4 A
A component transfers 12 J of energy when 3 C of charge passes through it. What is the voltage across it?
4 V