Current Electricity Charging Discharging Of Capacitors Question 293

Question: If the ammeter in the given circuit reads 2 A, the resistance R is

[Orissa JEE 2003]

Options:

A) 1 ohm

B) 2 ohm

C) 3 ohm

D) 4 ohm

Show Answer

Answer:

Correct Answer: A

Solution:

$ i=\frac{V}{R}\Rightarrow ,2=\frac{6}{\frac{6\times 3}{6+3}+R}=\frac{6}{2+R} $

Therefore $ R=1\Omega $ .