I need help with all of them, can someone please help, thank you much appreciate

Question

I need help with all of them, can someone please help, thank you much appreciated

(20%) Problem 5: A creïnt consisting of 5 resisters is showii in the graph. Their res stances are R1-79 R2-35 R,-80 , R4-10, and R,-15 , and the emf of the battery is 1.5 V Suppose the internal resistance of the battery is zero theexpertta.com ' 14% Part (a) Express the equivalent tesistance ofthe contenation ofR2, Ri, and R, Grade Summary Deductiona Potential 100% 4% per attempt> Ra Hints: 14s deduction per hint Ht remaining J Feedback: ductoion per feedbck i 4% Part (b) Express the total resistance of the circut R n terms of RJ,R2, Ri, R4, and R, . 14% Part (d) Express the current 1 through Rtn terms of the emf and the equivalent resistance R 14% Part I f) Express the power P dissipeed by R, through J and R1 un 52 14% Parl (c) Calculate the numerical value of the total resistance 14% Part (e) Calculate the numerical value of 1 n A 1400 Part (g) Calculate the numerical value of the power Pin w

Explanation / Answer

here,

R1 = 19 ohm , R2 = 35 ohm

R3= 89 ohm , R4 = 71 ohm

R5 = 35 ohm

a)

R2 , R3 and R4 are in parallel , let their rquivalent resistance be R

1/R = 1/R2 + 1/R3 + 1/R4

the equivalent resistance , Req = R1 + R + R5

b)

R2 , R3 and R4 are in parallel , let their rquivalent resistance be R

1/R = 1/R2 + 1/R3 + 1/R4

1/R = 1/35 + 1/89 + 1/71

solving for R

R = 18.6 ohm

the equivalent resistance , Req = R1 + R + R5

Req = 72.6 ohm

c)

the current through R1 , I1 = V/Req

d)

I1 = 1.5 /72.6 = 0.02 A

e)

the power dissapated through R1 , P = I1^2 * R1

f)

the power dissapated through R1 , P = I1^2 * R1

P = 0.02^2 * 19 W

P = 8.1 * 10^-3 W

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