Electric Current and Circuits

Electric Current and Circuits Principles

Electric Current and Circuits Principles

Articles
Title
A 9-V battery drives a circuit containing a 10-ohms resistor. What is the current that flows through this circuit?
Two identical resistors with resistance R are connected in parallel with a power supply with a potential difference of V. Which expression represents the rate that the circuit transfers energy to a single resistor?
Which of the following increases the resistance of a wire?
A 3-ohms headlight in a car is attached to the 12-V battery. How much energy transfers from the battery for every coulomb of electric charge that flows through this simple circuit?
For the circuit shown in the figure, what is the voltage of the battery if the current is 2.0 A?
As the temperature increases, what happens to the current-carrying ability of a wire?
In this diagram, what is the power dissipated by all of the resistors in the circuit?
In a circuit, 40 C of charge passes through a 10-ohms resistor in 80 s. What is the voltage that drives the current?
For the circuit shown in the figure, what must be the sum of the voltages around the complete circuit if the current is 10 A?
For the circuit in the diagram, the third resistor (R3) dissipates how much energy each second?

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