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CBSE Physics Alternating Current and Electromagnetic Waves Test Online

Test Name Alternating Current and Electromagnetic Waves Test
Subject CBSE Physics
Test Type MCQs
Total Question 30
Total Marks 60
Total Time 30 Minutes
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Central Board of Secondary Education, CBSE is a Central Board of Education in India for public and private schools. They facilitates all exams from Grade 1st to 12th. Physics subject is basic part of there syllabus. Our topics is Alternating Current and Electromagnetic Waves for preparation all types of exams test. Alternating Current Circuits and Electromagnetic Waves can be produced using a device called an alternator. This device is a special type of electrical generator designed to produce alternating current. A loop of wire is spun inside of a magnetic field, which induces a current along the wire. Pick test and start your preparation through best choices questions and answers.

CBSE Physics Alternating Current and Electromagnetic Waves Test Online

CBSE

1. Which of the following rays are not electromagnetic waves ?

Question 1 of 15

2. The reactance of a capacitor of capacitance C is X. If both the frequency and capacitance be doubled, the new reactance will be ?

Question 2 of 15

3. In a circuit, L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°. The value of C is ?

Question 3 of 15

4. Which of the following is the longest wave ?

Question 4 of 15

5. If λv, λx and λm represent the wavelengths of visible light, X rays and microwave respectively, then ?

Question 5 of 15

6. If ε°and μ° are respectively the electric permittivity and magnetic permeability of free space, and are the corresponding quantities in a medium the index of refraction of the medium is ?

Question 6 of 15

7. Which of the following has minimum wavelength ?

Question 7 of 15

8. The electromagnetic radiations are caused by ?

Question 8 of 15

9. What is the cause of "Green house effect" ?

Question 9 of 15

10. The oscillating electric and magnetic field vectors of electromagnetic wave are oriented along ?

Question 10 of 15

11. In an experiment, 200 V AC is applied at the ends of an LCR circuit. The circuit consists of an inductive reactance (XL) = 50Ω capacitive reactance (XC) = 50 Ω  and ohmic resistance (R) = 10 Ω . The impedance of the circuit is ?

Question 11 of 15

12. In an AC circuit, the rms value of current, ims is related to the peak current, iº by the relation ?

Question 12 of 15

13. What is the value of inductance L for which the current is maximum in series LCR circuit with C = 10 μF and ω = 1000 s-1 ?

Question 13 of 15

14. The frequency of ϒ-rays, X-rays and ultraviolet rays are a, b and c respectively. Then ?

Question 14 of 15

15. Fro a series L C R-circuit, the power loss at wavelength ?

Question 15 of 15


 

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