JEE PYQ: Current Electricity Question 54
Question 54 - 2019 (09 Jan 2019 Shift 1)
When the switch $S_1$ in the circuit shown, is closed then the valued of current $i$ will be:
(1) 3 A
(2) 5 A
(3) 4 A
(4) 2 A
Show Answer
Answer: (2)
Solution
Let voltage at C = xV. KCL: $\frac{20-x}{2} + \frac{10-x}{4} = \frac{x-0}{2}$. $\frac{20-x}{2} + \frac{10-x}{4} = \frac{x}{2}$. Solving: $x = 10$. $i = \frac{V}{R} = \frac{x}{2} = \frac{10}{2} = 5$ A.
BETA
