academic help needed

9 thoughts on “academic help needed”

2. In above problem R3, R4, R5 are in parallel.
   We will replace these resistance by equivalent resistance.

   For parallel combination equivalent resistance is given by

   1/R=(1/R3) +(1/R4) +(1/R5)

   1/R= 0.0714+0.0833+0.0625=0.2172
   R=4.60405

   So now the voltage in R2 and R is 23V

   = -23 *(14/(14+4.60405))
   we use -ve because the positive is marked to the -ve
   = -17.308 V

   I think esari ho, just double check to make sure that it is correct hai.

   Reply

3. Find equivalent of R3, R4 and R5.

   R = (R4//R5)//R3 = (12//16)//14 = 4.6027 ohm.

   Since voltage across R1 is same as source voltage V1, you can simply use voltage divider to find the voltage across R2.

   v = (R2/(R2+R))*V1 = (14/(14+4.6027))*20 = 15.051 volts.

   Reply

4. Kirschoff’s voltage law ho ki k use garnu parne haina ra?

   Reply

5. 15.05V ho bhane chai I have a solution.

   Reply

6. Potential across R1 is equal to that of V1 because they are in parallel. R3 R4 and R5 are parallel. Now apply kvl you are done

   Reply

7. A level physics?

   Reply

8. I hope this helps.
   U=Voltage, I=Current, R=Resistance, U2345=U2+3+4+5.

   U1 = U2345 = U-Total =20V (Parallel Connection)

   U2 + U345 = U-Total = 20V (Series Connection)

   I2 = I345 = I2345 (Series Connection)

   ​

   1/R345 = 1/R3 + 1/R4 + 1/R5 = 1,037 Ohm

   R2345 = R2 + R345 = 15,037 Ohm

   I2345 = U2345/R2345 = 1,33 Ampere

   U2 = R2xI2 = 18,62 Volt (I2 = I2345 = Series Connection)

   Reply

9. I’ll give you hints but won’t solve the whole thing.

   R3, R4 and R5 are in parallel, so their combined resistance (Rn) can be derived from:
   1/Rn = 1/R3 + 1/R4 + 1/R5

   R2 and Rn are in series, so the combined resistance (Rb) of that branch can be derived from:
   Rb = R2 + Rn

   The branch 1 consisting R1 and the branch 2 consisting Rb are in parallel, so the voltage across both the branch is same as the input voltage V1. You will get the current across branch 2 through,
   V1 = I2 x Rb

   The current passing through a branch of resistors in series is the equal for all resistors in the series, so you’ll get the voltage across R2 through
   V2 = I2 x R2

   If you want to cross check, the answer should be around 15.05 V.

   Reply

10. Sajilo hunxa tyo tw. R4, R5, R3 parallel. Resultant in series with R2. Tespaxi R1 sanga parallel hunxa new resultant. Current divider le flow huney current thaha vaihalxa, current rw resistance thaha vayesi voltage drop ni dekhinxa.

    Reply