The circuit shown in the figure below is connected for 3.20 min. (Assume R 1 = 8

Question

The circuit shown in the figure below is connected for 3.20 min. (Assume R1 = 8.45 ?, R2 = 2.65 ?, and V =16.5 V.)

JUST FILL IN THE BLANK

(a) Identify the type of energy storage transformation that occurs in the operation of the circuit.

As the circuit carries current, the 16.5 V  battery converts chemical energy into electrically transmitted energy. The 4 V battery converts _________________________  J from electrically transmitted energy into chemical energy.

The circuit shown in the figure below is connected for 3.20 min. (Assume R1 = 8.45 ?, R2 = 2.65 ?, and V =16.5 V.) JUST FILL IN THE BLANK (a) Identify the type of energy storage transformation that occurs in the operation of the circuit. As the circuit carries current, the 16.5 V battery converts chemical energy into electrically transmitted energy. The 4 V battery converts _________________________ J from electrically transmitted energy into chemical energy.

Explanation / Answer

consider all currents up so

I1 + I2 + I3 = 0

then do left loop

4 - 6 I2 +8.45 I1 =0

I2 = (4 + 8.45 I1)/6

now big loop

16.5 - 5.65 I3 + 8.45 I1 = 0

I3 = (16.5 + 8.45 I1)/5.65

now plug back into current equation

I1 + (4 + 8.45 I1)/6 + (16.5 + 8.45 I1)/5.65=0

I1=-0.92 A

then I2 = (4+8.45*-0.92)/6= -0.63 A

so E = P t = I V t = 0.63*4*3.2*60= 484 J

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