Question

calculate Vb by applying kvl​

pls answer quickly if u know

Answer 1

Answer:

This question can be solved in a clockwise or an anticlockwise manner. I am going to be taking the loop as clockwise.

( NOTE: V= iR if a resistor is given, we take it as E if only a cell is given.)

-2i +12-1i -2i-Vb- 3i+ 3- 1i= 0

Since the current has not been stated in the question, kindly substitute and calculate the answer.

Explanation:

The sign convention in loop questions is very tricky. If only a resistor-cell combination is provided, the voltage through resistors is taken as negative if the current acts in the direction of the resistor and in the case of cells, when current is moving from the positive to negative terminal, we take E as negative; when moving from negative to positive terminal( smaller line to bigger line)- we take E as positive.