SATHEE: Electro Magnetic Induction And Alternating Currents Question 523

Electro Magnetic Induction And Alternating Currents Question 523

Question: Average energy stored in a pure inductance L when a current i flows through it, is [MP PET/PMT 1988]

Options:

A) $L i^{2}$

B) $2 L i^{2}$

C) $\frac{L i^{2}}{4}$

D) $\frac{L i^{2}}{2}$

Show Answer

Answer:

Correct Answer: D

Solution:

As we know $e = - \frac{d φ}{d t} = - L \frac{d i}{d t}$

Work done against back e.m.f. e in time dt and current i is
$d W = - e i d t = L \frac{d i}{d t} i d t = L i d i$
$\Rightarrow W = L \int_{0}^{i} i d i = \frac{1}{2} L i^{2}$

Electro Magnetic Induction And Alternating Currents Question 523

Question: Average energy stored in a pure inductance L when a current i flows through it, is [MP PET/PMT 1988]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Electro Magnetic Induction And Alternating Currents Question 523

Question: Average energy stored in a pure inductance L when a current i flows through it, is [MP PET/PMT 1988]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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