Question

Which of the following statements is FALSE regarding evaluating networks of resistors and batteries? Please explain!

Select the correct answer

a. When following the direction of a (proposed) current, the voltage change across a battery is positive ( a voltage gain)

b. The sum of the currents entering a junction (node) must equal the sum of the currents exiting that junction (node).

c. The sum of the current around any closed loop must equal to zero

d. The sum of the voltages differences around any closed loop must equal zero.

e. When running against the direction of a (proposed) current, the voltage change across a resistor is positive ( a voltage gain)

f. When following the direction of a (proposed) current, the voltage change across a resistor is negative ( a voltage drop)

Answer 1

C is false statement as the current around any closed loop is not zero , instead potential drop across any closed loop is zero.

E is false statement as when running against the direction of proposed current , the voltage change is not positive. Instead the voltage change is negative in such a case

F is a false statement as when running in the direction of proposed current, the voltage change is not negative, instead the voltage change is positive in such a case .

Rest A , B , D are true statements.