Question 248: Current Electricity

Question

In the figure shown, the current in the 10 V battery is close to :

Accepted Answer

Apply KirchhoffÃ¢ÂÂs Current Law at junction A,
$${{x - \left( { - 20} \right)} \over 7} + {{x - \left( { - 10} \right)} \over 4} + {{x - 0} \over {10}}$$ = 0
$$ \Rightarrow $$ x = $$ - {{1500} \over {138}}$$ = -10.87 V
Current through 10 v,
i = $${{ - 10.87 - \left( { - 10} \right)} \over 4}$$ = - 0.21 A
As sign of current is negative so it will flow from positive to negative terminal.

Answer

0.36 A from negative to positive terminal

Answer

0.42 A from positive to negative terminal

Answer

0.71 A from positive to negative terminal

Answer

0.21 A from positive to negative terminal

Current Electricity

In the figure shown, the current in the 10 V battery is close to :

Choose the correct answer: