Home
Class 12
PHYSICS
Calculate the electric and magnetic fiel...

Calculate the electric and magnetic fields produced by the radiation coming from a 100 W bulb at a distance of 3m. Assume that the efficiency of the bulb is 2.5% and it is a point source.

Text Solution

Verified by Experts

`4.07 V//m, 1.4xx10^(-8)T`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise EVALUATION QUESTIONS AND ANSWERS|16 Videos
  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION (ASSIGNMENT)|5 Videos
  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise SOLUTIONS TO EXERCISES FROM NCERT TEXT (Answer the following questions)|6 Videos
  • ELECTROMAGNETIC INDUCTION

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|13 Videos
  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NEW JOYTHI PUBLICATION|Exercise Competitive Exam Corner|22 Videos

Similar Questions

Explore conceptually related problems

About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average intensity of visible radiation a. at a distance of 1m from the bulb b. at a distance of 10m Assume that the radiation is emitted isotropically and neglect reflection.

What is the magnitude of the equatorial and axial fields dut to a bar magnet of length 5.0 cm at a distance of 50 cm from its mid - point ? The magnetic moment of the bar magnet is 0.40Am^2 .

The intensity of sound from a point source is 1.0 xx 10^-8 Wm^-2 , at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?

A bar magnet has a pole strengh of 3.6 A m and magnetic length 8cm . Find the magnetic field at (a) a point on the axis at a distance of 6cm from the centre towards the north pole and (b) a point on the perpendiuclar bisector at the same distance.

A long bar magnet has a pole strength of 10 Am . Find the magnetic field at a point on the axis of the magnet at a distance of 5cm from the north pole of the magnet.

The overall luminous efficient of a 100 W electric lamp is 25 lumen W^-1 . Assume that light is emitted by the lamp only in the forward half, and is uniformly distributed in al diredctionsin this half. Calculate the luminous flux falling on a plane object of area 1cm^2 placed at a distance of 50 cm from the lamp and perpendicular to the line joining the lamp and the object.