SATHEE: Electro Magnetic Induction And Alternating Currents Question 371

Electro Magnetic Induction And Alternating Currents Question 371

Question: A coil has 2000 turns and area of $70 c m^{2}$ . The magnetic field perpendicular to the plane of the coil is $0.3 W b / m^{2}$ and takes 0.1sec to rotate through $180^{o}$ . The value of the induced e.m.f. will be [MP PET 1993; Similar to AIIMS 1997]

Options:

A) $8.4 V$

B) $84 V$

C) $42 V$

D) $4.2 V$

Show Answer

Answer:

Correct Answer: B

Solution:

$e = - \frac{N B A (\cos θ_{2} - \cos θ_{1})}{Δ t}$ $= - 2000 \times 0.3 \times 70 \times 10^{- 4} \frac{(\cos 180 - \cos 0)}{0.1}$
$\Rightarrow e = 84 V$

Electro Magnetic Induction And Alternating Currents Question 371

Question: A coil has 2000 turns and area of $70 c m^{2}$ . The magnetic field perpendicular to the plane of the coil is $0.3 W b / m^{2}$ and takes 0.1sec to rotate through $180^{o}$ . The value of the induced e.m.f. will be [MP PET 1993; Similar to AIIMS 1997]

Options:

Answer:

Solution:

Engineering Preparation

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NCERT Books & Solutions

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Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Electro Magnetic Induction And Alternating Currents Question 371

Question: A coil has 2000 turns and area of 70cm2 . The magnetic field perpendicular to the plane of the coil is 0.3Wb/m2 and takes 0.1sec to rotate through 180o . The value of the induced e.m.f. will be [MP PET 1993; Similar to AIIMS 1997]

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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Question: A coil has 2000 turns and area of $70 c m^{2}$ . The magnetic field perpendicular to the plane of the coil is $0.3 W b / m^{2}$ and takes 0.1sec to rotate through $180^{o}$ . The value of the induced e.m.f. will be [MP PET 1993; Similar to AIIMS 1997]