For the circuit in the figure below, find the following. (Take R = 6.2 , and r =

Question

For the circuit in the figure below, find the following. (Take

R = 6.2 ,

and

r = 1.2 .)

(a) the magnitude of the current and the direction of positive current

(b) the potential difference across the battery terminals a and b


(c) the rate at which heat is being produced in the 6.2 resistor


(d) the rate at which heat is being produced inside the battery


(e) the rate at which the battery's chemical energy is being used

Additional Materials

magnitude direction ---Select--- clockwise direction around the circuit counterclockwise direction around the circuit

Explanation / Answer

(a)current (I)=6.1/7.4=0.824 A

direction is clockwise

(b)Va-Vb=6.1-(1.2*0.824)=5.1108

(c)rate at which heat is being produced in the 6.2 resistor = power = I^2*R=4.209 W

(d)rate at which heat is being produced inside the battery = I^2*r=0.814 W

(e)rate  at which the battery's chemical energy is being used = VI=5.024

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