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Series-Parallel Circuits

Q1: Which circuit fault do the meter readings in the given figure indicate?

A The 1 komega.gif resistor is open.

B The 4.7 komega.gif resistor is open.

C The 2.2 komega.gif resistor is open.

D The 3.3 komega.gif resistor is open.

ANS:B - The 4.7 komega.gif resistor is open.

1) If 1 k opened no current will flow.

2) If 4.7 k opened 1st reading is correct. Now apply voltage divider rule..i.e.

3) 3/(3.3+1)*10 = 7.67 v which is also correct. So option B is correct.



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