Understanding Electric Circuits: Current, Voltage, and
School
American University of Sharjah**We aren't endorsed by this school
Course
PHYSICS 101
Subject
Electrical Engineering
Date
Dec 9, 2024
Pages
10
Uploaded by DeanGalaxy7979
E1. A charge of 28 C passes at a steady rate through a resistor in a time of 7 s. What is the current through the resistor? E2. A current of 4.5 A flows through a battery for 3 minutes. How much charge passes through the battery in that time?
E3. A 47 Ω resistor in a circuit has a voltage difference of 8 V across its leads. What is the current through this resistor?E4. A current of 1.5 A is flowing through a resistance of 30 Ω. What is the voltage difference across this resistance?
E5. A current of 0.522 A flows through a resistor with a voltage difference of 115 V across it. What is the resistance of this resistor? E6. Four 22 Ω resistors are connected in series to an 18-V battery of negligible internal resistance. (a) What is the current flowing through each resistor? (b) What is the voltage difference across each resistor?
E8. In the circuit shown, the 1Ωresistance is the internal resistance of the battery and can be considered to be in series, as shown, with the battery and the 14Ωload.1.What is the current flowing through the 14Ωresistor?2.What is the voltage difference across the 14Ωresistor?
In the circuit shown, the internal resistance of the battery can be considered negligible.1.What is the equivalent resistance of the two-resistor parallel combination?2.What is the total current flowing through the battery?3.What is the voltage drop across the 12-ohm resistor?4.What is the voltage drop across the 15-ohm resistor?5.What is the current flowing through the 15Ωresistor?6.What is the power dissipated in the 12Ωresistor?7.Is the current flowing through the 12Ωresistor greater or less than that flowing through the 15Ωresistor? Explain.
In the circuit shown, the internal resistance of the battery can be considered negligible.1.What is the equivalent resistance of the two-resistor parallel combination?2.What is the total current flowing through the battery?3.What is the voltage drop across the 12-ohm resistor?4.What is the voltage drop across the 15-ohm resistor?5.What is the current flowing through the 15Ωresistor?6.What is the power dissipated in the 12Ωresistor?7.Is the current flowing through the 12Ωresistor greater or less than that flowing through the 15Ωresistor? Explain.
in the combination of 12Ωresistors shown in the diagram, there are two different parallel combinations that, in turn, are in series with the middle resistor.1.What is the resistance of each of the two parallel combinations?2.What is the total equivalent resistance between points A and B?3.If there is a voltage difference of 18 V between points A and B, what is the current flowing through the entire combination?4.What is the current flowing through each of the resistors in the three-resistor parallel combination?
in the combination of 12Ωresistors shown in the diagram, there are two different parallel combinations that, in turn, are in series with the middle resistor.1.What is the resistance of each of the two parallel combinations?2.What is the total equivalent resistance between points A and B?3.If there is a voltage difference of 18 V between points A and B, what is the current flowing through the entire combination?4.What is the current flowing through each of the resistors in the three-resistor parallel combination?
A 75-W light bulb operates on an effective ac voltage of 110 V.1.What is the effective current through the light bulb?2.From Ohm’s law, what is the resistance of the light bulb?
A toaster draws a current of 9.0 A when it is connected to a 110-V ac line.1.What is the power consumption of this toaster?2.What is the resistance of the heating element in the toaster?A clothes dryer uses 6600 W of power when connected to a 220-V ac line. How much current does the dryer draw from the line?