Consider an electrical circuit containing a two way switch 'S'… | JEE Main 2021 (27 Jul, Shift 1)

Q13JEE Main 2021 · 27 JUL · SHIFT 1Medium

Inductors & DC Transients (Mixed)

Consider an electrical circuit containing a two way switch 'S'. Initially S is open and then T1 is connected to T2. As the current in R = 6 $\Omega$ attains a maximum value of steady state level, T1 is disconnected from T2 and immediately connected to T3. Potential drop across r = 3 $\Omega$ resistor immediately after T1 is connected to T3 is __________ V. (Round off to the Nearest Integer)

Numerical answer type. Work it out, then open the answer.

Show answer and solution

Answer: 3

With T1 on T2, the steady current through $L$ (acting as a wire) is $I = \frac{6}{6} = 1\text{ A}$ .
When T1 is switched to T3, the inductor current cannot change instantly, so 1 A now flows through $r$ .
$V_r = Ir = 1 \times 3 = 3\text{ V}$
So the answer is 3 V.

Report a mistake

More questions on Inductors & DC Transients (Mixed)

An RC circuit as shown in the figure is driven by a AC source generating a square wave…JEE Main 2021 (16 Mar, Shift 1)
The current (i) at time t = 0 and t = ∞ respectively for the given circuit is:JEE Main 2021 (25 Feb, Shift 1)
A series L-R circuit is connected to a battery of emf V. If the circuit is switched on at…JEE Main 2020 (4 Sep, Shift 2)
An emf of 20 V is applied at time t = 0 to a circuit containing in series 10 mH inductor…JEE Main 2020 (7 Jan, Shift 2)
A coil of self inductance 10 mH and resistance 0.1 Ω is connected through a switch to a…JEE Main 2019 (10 Apr, Shift 2)
In the figure shown, a circuit contains two identical resistors with resistance R = 5 Ω…JEE Main 2019 (12 Jan, Shift 1)
Consider the LR circuit shown in the figure. If the switch S is closed at t = 0 then the…JEE Main 2019 (12 Apr, Shift 2)
In the circuit shown, the switch S1 is closed at time t = 0 and the switch S2 is kept…JEE Main 2019 (11 Jan, Shift 1)

Inductors & DC Transients (Mixed) question from JEE Main 2021 (27 Jul, Shift 1)

More questions on Inductors & DC Transients (Mixed)