Electric Circuits Answers

Since the Christmas season is approaching, a shopping mall owner decides to decorate his mall with the decorative elements as shown in the following

circuit. The values of the resistances offered by different decorative stars are as follows: the resistance offered by red star is 8 ohms, blue star offers a

resistance of 6 ohms, while the pink star offers resistance of 5 ohms and the green star has a resistance of 10 ohms. The owner decides to simply his circuit,

in this regard, find the Thevenin's equivalent across the green star and also determine the current that will flow across the green star

A dielectric with a positive charge of 13 C has 18.75X10 ^18 electrons added to it. What is the net charge of the dielectric in coulombs ?

If a current of 500 mA charges a dielectric for 3 s, how much charge is stored in the dielectric ?

If in the previous problem (problem 7). If charge 𝑞1 = −3.20 × 10−19𝐶 is added and placed at a distance (¾) R from 𝑞1. Find the magnitude and direction of net force on 𝑞1

. A girl delivering newspapers covers her route by traveling 3.00

blocks west, 4.00 blocks north, and then 6.00 blocks east. (a)

What is her resultant displacement? (b) What is the total

distance she travels?

what happens when a temporary magnet keeps its magnetism for a long time?

A. easily loses its magnetism

B. realigned domain

C. has two north poles

D. cannot be destroyed

How far is point P from a proton if the electric potential at point P is +180 V?

(a)The following resistors are in parallel: 1000, 800, 500, 200, and 100 (. What is the total resistance?

(b) What resistance value in parallel with 100 ( produces a total resistance of 40 (?

(a) A 10 ( resistor, a 11 ( resistor and a 39 ( resistor are connected in series across a potential difference of 120 V. Calculate the voltage drop across the 10 ( resistor.

(b) Three resistors, whose values are 35 (, 45 (, and 85 (, are connected in parallel across a 35 V battery. What is the current through the 35 ( resistor

119 Shepher

Consider a large flat horizontal sheet with thickness and volume charge density. This sheet is tangent to a sphere with radius R and slame charge density as shen in Fig. 1. Let A be the pisint of urgency, and let & be the point opposite to in the tap side of the sheet. Show that the net upward clectric field (fran the sphere plus the sheet) it in larger than tAif (2/3)

Two resistors connected in series circuit with value of 20 milli- Ω and 5 Ω. Determine the equivalent resistance of the series circuit.