Electric Circuits Answers

Suppose you need a capacitor bank with a total capacitance of 0.750-mF but you have only 1.50-mF capacitors at your disposal. What is the smallest number of capacitors you could connect together to achieve your goal, and how would you connect them?

a cell has an e.m.f. of 3v. when it is connected across a resistor of resistance 4ohms, a current of 0.5a passes through the current. calculator the internal resistance

What current must flow if 0.24 coulombs is to be transferred in 15ms? *

The unit of quantity of electricity is the

Consider two charges q1=38e and q2=−48e at positions (−22,−26,−14) and (46/√3, 20/√2, −35) respectively where all the coordinates are measured in the scale of 10^−9m or nano meters. If position vector of the charge q1 is r⃗ 1 and charge q2 is r⃗ 2.

find x,y and z components of vector for the following questions

a) Find the relative position vector that points from charge q1 to charge q2.

b) Calculate the force acting on q1 due to q2.

Now consider another charge q3=20e is in the xyz system positioned at (32 /√3, −16/√2, −15). Calculate the net force acting on q1 and q2.

c) Net Force on q1 due to other charges

d) Net Force on q2 due to other charges

e) Calculate the net electric field at the position of q3 due to q1 and q2 charge. Note that, you cannot calculate electric field of q3 at it's own position.

Say the charge q3 have mass of m=0.18gram. What will be it's acceleration given it's in the field of other charges.

f) Calculate the magnitude of the acceleration of q3 charge

Design a phase shift oscillator to oscillate at 2 kHz using an OPAMP. Given C=0.1

µF.

Suppose you have 5 point charges q1 to q5 distributed along a semi-circle maintaining equal distance. The charge q6 is on the center of the circle which is also the origin of given coordinate system. The radius of the semi-circle is R=15cm and the magnitude of the charges are as follows : q1=q5=29μC , q2=q4=36μC and q3=q6=−37μC .

Find the x and y component of the vector for all the following questions below

a) Find the vector that points from q1 to q6 and call it r(1,6) .

b) Calculate the coulomb force on q6 due to q1 in unit vector notation and call it F(1,6).

c) Find the vector that points from q3 to q6 and call it r(3,6).

d) Calculate the coulomb force on q6 due to q3 in unit vector notation and call it F (3,6).

e) Find the vector that points from q4 to q6 and call it r(4,6).

f) Calculate the coulomb force on q6 due to q4 in unit vector notation and call it F (4,6).

g) Calculate the Net Electric force on q6 due to all other charges.

Inductor as a component in transformer used 10 k resistor. Calculate the maximum

voltage that can be applied to achieve a power of 0.15W

What capacitance is needed to store 3.00μC of charge at a voltage of 120 V?

Determine the net capacitance C of each network of capacitors shown below. Assume that =1.0pF, =2.0pF,=4.0pF and =5.0pF. Find the charge on each capacitor, assuming there is a potential difference of 12.0V across each network.