DC Circuits
If you double the voltage across a resistor, while the resistance stays the same, by how much does the current through it change?
There is no change in current.
It halves.
It quadruples.
It doubles.
If the total resistance in a series circuit is increased, what happens to the power dissipated by each resistor assuming constant voltage?
The power increases.
The power remains constant.
The power decreases.
There's not enough information to decide.
If two resistors, each of value 8 Ω, are connected in parallel, what is their equivalent resistance?
8 Ω
4 Ω
2 Ω
16 Ω
When three identical resistors are connected in parallel across a voltage source and one resistor is removed, what happens to the total power dissipated by the circuit?
The total power dissipated by the circuit increases.
The total power dissipated by the circuit decreases.
There's not enough information to determine how power is affected.
The total power dissipated by the circuit remains unchanged.
What potential difference across a single resistor would result in the same power dissipation as two identical resistors connected in series to the same voltage source?
Same as the source voltage
Half the source voltage
Four times the source voltage
Double the source voltage
In a series circuit with three resistors of 2 Ω, 4 Ω, and 6 Ω respectively, what is the equivalent resistance?
3 Ω
4 Ω
24 Ω
12 Ω
What happens to the total resistance in a circuit if you add more resistors in series?
It stays the same
It becomes zero
It decreases
It increases

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What does Ohm's Law state about the relationship between voltage (V), current (I), and resistance (R)?
What occurs to an object's inertia when its mass is doubled while its velocity remains constant?
Inertia doubles.
Inertia quadruples.
Inertia remains unchanged.
Inertia halves.
What happens to the total resistance if identical resistors are added in parallel?
Stays unaffected unless there's an external voltage change.
Total resistance remains constant.
Increases exponentially with each resistor added
Total resistance decreases.