SATHEE: Electro Magnetic Induction And Alternating Currents Question 603

Electro Magnetic Induction And Alternating Currents Question 603

Question: In an LR-circuit, time constant is that time in which current grows from zero to the value (where $I_{0}$ is the steady state current) [MP PMT/PET 1998; MP PET 2002]

Options:

A) $0.63, I_{0}$

B) $0.50, I_{0}$

C) $0.37, I_{0}$

D) $I_{0}$

Show Answer

Answer:

Correct Answer: A

Solution:

Current at any instant of time t after closing an L-R circuit is given by $I = I_{0} [1 - e^{\frac{- R}{L} t}]$ Time constant $t = \frac{L}{R}$
$∴ I = I_{0} [1 - e^{\frac{- R}{L} \times \frac{L}{R}}] = I_{0}, (1 - e^{- 1}) = I_{0}, (1 - \frac{1}{e})$ $= I_{0}, (1 - \frac{1}{2.718}) = 0.63 I_{0} = 63$ of $I_{0}$

पिछला

अगला

गोपनीयता नीति

द्वारा संचालित Prutor@IITK

sathee@iitk.ac.in

SATHEE का मीडिया कवरेज

खेल स्टोर

ऐप स्टोर

Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on "I understand".

Electro Magnetic Induction And Alternating Currents Question 603

Question: In an LR-circuit, time constant is that time in which current grows from zero to the value (where I0 is the steady state current) [MP PMT/PET 1998; MP PET 2002]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Menu

Question: In an LR-circuit, time constant is that time in which current grows from zero to the value (where $I_{0}$ is the steady state current) [MP PMT/PET 1998; MP PET 2002]