For the circuit in the figure (Figure 1) . Assume that R 1 = 1.4 and R 2 = 6.0 .

ID: 1339116 • Letter: F

Question

For the circuit in the figure (Figure 1) . Assume that R1 = 1.4 and R2 = 6.0 .

Part A

Find the rate of conversion of internal (chemical) energy to electrical energy within the battery.

Express your answer using two significant figures.

P= (in W)

Part B

Find the rate of dissipation of electrical energy in the battery.

Express your answer using two significant figures.

P1= (in W)

Part C

Find the rate of dissipation of electrical energy in the external resistor.

Express your answer using two significant figures.

P2= (in W)

part a )

12 - 1.4I - 6I = 0

I = 1.6 A

P = I^2R

P = 19 W

part b )

The battery dissipates some of this energy into heat through it’s internal resisitance

P = I^2R

P = (1.6^2)*1.4

P = 3.6 W

part c )

P = I^2R

R = 6 ohm

P = 15 W