R = 5.1 , r = 1.3 .) (a) the magnitude of the current and the direction of posit

Question

R = 5.1 , r = 1.3 .) (a) the magnitude of the current and the direction of positive current magnitude
direction ---Select--- clockwise direction around the circuit counterclockwise direction around the circuit
(b) the potential difference across the battery terminals a and b


(c) the rate at which heat is being produced in the 5.1 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 magnitude
direction ---Select--- clockwise direction around the circuit counterclockwise direction around the circuit

Explanation / Answer

emf E = 5.5 V, external resistance R = 5.1 O, internal resistance r = 1.3 O (a) the magnitude of the current and the direction of positive currentmagnitude direction is clockwise direction around the circuit (b) the potential difference across the battery terminals a and b is V = R - ir where i = current = E / ( r+ R ) = 0.859 A (c) the rate at which heat is being produced in the 5.1 O resistor is = i^ 2 * R = 3.766 W (d) the rate at which heat is being produced inside the battery = i^ 2* r = 0.96 W (e) the rate at which the battery's chemical energy is being used = E^ 2 / r = 23.26 W

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