Studied by 12 peopleRL
________ circuits contain just an inductor and a resistor, and perhaps a battery.
RC
When you have both resistors and capacitors in a circuit, the circuit is called an "________ circuit.
L
________ is called the inductance of the inductor.
capacitor
A(n) ________ blocks current once it has been connected for a while.
inductor
A(n) ________ makes use of induced EMF to resist changes in current in a circuit.
ohms
Resistance is measured in ________.
Ammeters
________ measure current, and voltmeters measure voltage.
Current
The flow of electric charge
Resistance
A property of a circuit that resists the flow of current
A 100 Ω, 120 Ω, and 150 Ω resistor are connected to a 9-V battery in the circuit shown above. Which of the three resistors dissipates the most power?
(A) the 100 Ω resistor
(B) the 120 Ω resistor
(C) the 150 Ω resistor
(D) both the 120 Ω and 150 Ω
A - Voltage changes across the 100 Ω resistor, then again across the parallel combination. Because the 100 Ω resistor has a bigger resistance than the parallel combination, the voltage across it is larger as well. Now consider each resistor individually.
By power = V2/R, the 100 Ω resistor has both the biggest voltage and the smallest resistance, giving it the most power.
Note
Flashcard