A circuit consists of a 12.0- battery connected to three resistors (40 , 16 and

Question

A circuit consists of a 12.0- battery connected to three resistors (40 , 16 and 120 ) in series.

Part A
Find the current that flows through the battery.
Express your answer using two significant figures.


Part B
Find the potential difference across the 40 resistor.
Express your answer using two significant figures.

Part C
Find the potential difference across the 16 resistor.
Express your answer using two significant figures.

Part D
Find the potential difference across the 120 resistor.
Express your answer using two significant figures.

Explanation / Answer

A) Equivalent resistance = 40+16+120 = 176Ohms Current flowing through the battery = 12/176 = 0.068A B)Since they are connected in series current flowing through all the resistors is same as the current flowing through the battery = 0.068A The potential difference across the 40 resistor = 40*0.068 = 2.7V C)The potential difference across the 40 resistor = 16*0.068 = 1.1V D)The potential difference across the 40 resistor = 120*0.068 = 8.2V

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