Practice EXERCISES - 8.6 | 8. ELECTROMAGNETIC WAVES | CBSE 12 Physics Part 1
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8.6 - EXERCISES

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the capacitance of a capacitor with a radius of 12 cm and separation of 5 cm?

💡 Hint: Remember to convert measurements to meters.

Question 2

Easy

What are the units of capacitance?

💡 Hint: Think of the basic formula for capacitance.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the term 'displacement current' refer to?

  • A type of conduction current
  • Current due to changing electric fields
  • Electric current at rest

💡 Hint: Think about how it relates to Maxwell's theoretical framework.

Question 2

Kirchhoff's Junction Rule can be stated as:

  • True
  • False

💡 Hint: Review the principles of current conservation in circuits.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A capacitor charges with a constant current of 1.5 A. Calculate the capacitance if the voltage across the plates increases from 0 to 300 V in 20 seconds.

💡 Hint: Consider the charging equation of capacitors and use the quadratic relationship.

Question 2

An electromagnetic wave of frequency 60 MHz is propagating. Calculate both its wavelength and amplitude of the electric field if the amplitude of the magnetic field is 800 nT.

💡 Hint: Use relationships between frequency, speed of light, and electromagnetic field strengths.

Challenge and get performance evaluation