Electric Current and Circuits

Electric Current and Circuits Principles

Electric Current and Circuits Principles

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Title
A 9-V battery is wired in series with three resistors (20 ohms, 30 ohms, 15 ohms).What is the sum of the voltages around the entire circuit?
A space heater with a resistance of 12 ohms is connected to a 120-V power supply. How much energy is transferred to thermal energy as this device operates for 2 hours?
Two 40-ohms resistors wired in parallel are connected in series with a 20-ohms resistor and a power supply. The current in each of the parallel resistors is 1.5 A. What is the current flowing through the 20-ohms resistor and the power supply, respectivel
Which of the following are true about the power output of a circuit?
A resistor dissipates 100 kW of power when a 5-A current passes through it. What is the value of its resistance?
For the circuit shown in the diagram, what is the equivalent resistance of the circuit?
A 9-V battery drives 3 A of electric current through a resistor. What is the power dissipated by the resistor?
What is the current flowing through the circuit shown in the diagram?
For the circuit in the diagram, which of the following expressions will describe the amount of current flowing through the resistors?
For the circuit in the diagram, what is the total current?

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