Explore BrainMass


Current, Potential Difference

Three resistors of resistance 2,4,10 ohm respectively are connected a) in series with a 12V supply, b) in parallel across a 12V supply. 1) In each case draw a circuit diagram and determine the current through each resistor and the potential drop across each resistor. 2) Determine the power dissipated in the 10 ohm resist

Three Parallel Resistors

An electrical circuit consists of a set of three parallel resistors (A,B, and C) which are connected in series with another set of two parallel resistors, (D and E). These two sets of resistors are connected in a series loop to a battery. Assume the following resistor values: A=33 ohms B= 100 ohms C= 51 ohms D= 22 ohms

Resistors - Current and Wire

Two uniform wires having circular cross-sections, both with the same length and made of identical material, are both maintained at the same potential difference and the same temperature. The first wire has a diameter of 2.2 mm and the second has a diameter of 4 mm. If the current in the first wire is 1.1 amps, then what is th

Circuit Elements - Circuit Model and Resistor

The table in Fig. P2.23 (a) gives the relationship between the terminal voltage and current of the practical constant voltage source shown in... Please see the attachment for the complete question and diagram. Thanks.

Resistor problem

If a current of 15 A is flowing through the 15 ohm resistor. What is the voltage? Please see attached for diagram.

Power Absorbed by Variable Resistor

A circuit connected in series contains a voltage source of 20 V, a 5 ohm resistor, and a variable resistor, R. Determine the powers absorbed by the variable resistor ranging from 0 to 20 ohms.

Series and Parallel Resistors

Hi. Actually, this is embarrassing, but my question is simply an algebra question. I know the equation and I know the answer, but I can't remember how to GET the answer. Can someone please walk me through this very simple algebra issue? Equivalent resistance in a circuit = 26 ohms R1 and R2 are parallel resistors; R1 = 55 oh

Resistors: Explanations and Calculations

(1) I have five circuits and want to run each one, one at a time, and then all five at the same time. My source is 12Vdc and 1500mA. The first circuit is 1.992 Mega ohms, the second is 3248 ohms, the third is 13.2k ohms, and the fourth is 0.247 Mega ohms and the fifth is .777k ohms. Now, the first four circuits use 5V and the

Resistance in Parallel

Prove: For resistors in parallel configuration, the equivalent resistance is always smaller than the smallest resistor.


1. 45 A of current passes through a cross section of wire. How many charges pass through in 3 seconds? A. 9.375 x 10^19 B. 3.59 x 10^16 C. 2.16 x 10^17 D. 8.4 x 10^20 2. A 30 ohm resistor dissipates 500W of power. What current is running through the resistor? A. 15000 A

Maximum resistance

Suppose that you have a 460Ohm, a 850Ohm, and a 1.50kilo-Ohm resistor. What is the maximum resistance you can obtain by combining these?

Resistors, Inductors, and Capacitors

1- Assume a passive network N composed of resistors, inductors, and capacitors A- How can you modify N such that each and every natural frequency is shifted one unit to left? (i.e. its real part is reduced by 1) B- How can you modify N such that each and every natural frequency is shifted one unit to right? (i.e. its real pa


Question: For the circuit modeled in the attached file (titled: Resitor.doc), determine the current in each resistor and the voltage across the 200 ohm resistor. See the attached file.

Electrical Problem

A person has a 72 V battery along with 6, 9, and 18 ohm resistors. They are first wired in series, then is parallel. First, sketch each circuit. Then, find the current in each resistor as well as the voltage across each resistor for each resistor, for each circuit.

Simple Current and Resistor problem

Two 6 ohm resistors are placed in parallel with a 9 V battery. What is the current out of the battery? 9 / ( 1 / (1/6 + 1/6) ) = 3A My answer key is telling me my answer is wrong, am I missing something ?

Resistor - Current of 5mA with Applied Voltage of 5V

An n-type Si resistor is to be designed so that it carries a current of 5mA with an applied voltage of 5V. T=300K. Mn*=.26M0. M0=9.11x10^31Kg. (a) If Nd=10^15/cm^3 and Na=0, design a resistor to meet the required specifications. (b) If Nd=3x10^16/cm^3 and Na=2.5x10^16/cm^3, redesign the resistor. What are the answers a

Voltage drop calculation

Referring to the attached circuit, determine the voltage drop (from top to bottom) across the 4 Ohm resistor.