***Help with all or only a few is much appreciated*** The points b and c on the

Question

***Help with all or only a few is much appreciated***

The points b and c on the diagram are theterminals of a battery with EMF E and internal resistance r. The circuitresistors have the following values:

R1 = 37 W,R2 = 41 W,R3 = 51 W,R4 = 56 W

(a) An ideal voltmeter is connected between b and c; it readsVc - Vb = 12 V. What is theEMF of the battery?

E = V    

(b) What resistance would an ohmmeter connected across pointsa and c read?

R = W    

(c) An ideal ammeter is inserted between points a andb it reads 0.18 A. Determine the internal resistance ofthe battery?

r = W    

(d) What does the voltmeter connected across b andc read now?

Vc - Vb = V    

(e) Calculate the magnitude of the current throughR2.

I2 = A    

(f) At what rate is thermal energy (heat) being producedinside the battery?

Pint = W    

(g) What is the power being provided by the battery to theexternal circuit (outside the battery)?

Pload = W

***Help with all or only a few is much appreciated***

The points b and c on the diagram are theterminals of a battery with EMF E and internal resistance r. The circuitresistors have the following values:

R1 = 37 W,R2 = 41 W,R3 = 51 W,R4 = 56 W

Explanation / Answer

b,R=(R1+R2+R3)*R4/(R1+R2+R3+R4)=39.05 (Ohm) c,r=E/I-R=27.62 (Ohm) d,U=E-I*r=7.02 V e,IR2=I*R4/(R1+R2+R3+R4)=0.05 A f,Pin=I^2*r=0.89 W g,Pload=I^2*R=1.265W

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