Given the circuit shown in Fig. 19-38, use the words “increases,” “decreases,”or ”stays the same” to complete the following statements:
a. If R7increases, the potential difference between A and E____ . Assume no resistancein and E.
b. If R7-increases, the potential difference between A and E_____. Assume and Ehaveresistance.
c. If R7 increases, the voltage drop across R4_____
d. If R2 decreases, the current through R1_______
e. If R2 decreases, the current through R6______
f. If R2 decreases, the current through R3_____
g. If R5 increases, the voltage drop across R2________
h. If R5 increases, the voltage drop across R4 _________
I. If R2, R5, and R7 increase, E (r=0)______
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PHYSICS: PRINCIPLES W/ APPLICATIONS
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