Home / Tests / Alternating Current Electromagnetic Waves Test Online

Alternating Current Electromagnetic Waves Test Online

Test Name Alternating Current & Electromagnetic Waves Test
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
Test Help For
  • Physics Subject Test Prep.
  • All Admissions Test.
  • All Jobs Test prep.
  • Medical Test prep.
  • Engineering Test prep.

Alternating Current & Electromagnetic Waves Test are available. Attempt online Multiple Choice Questions of Alternating Current & Electromagnetic Waves over here.

Alternating Current & Electromagnetic Waves Test Online


1. Which wavelength of sun is used finally as electric energy?


Question 1 of 15

2. Flash light equipped with a new set of batteries, produces bright light. As the batteries wear out:


Question 2 of 15

3. According to Maxwell’s hypothesis, changing of electric field give rise to:


Question 3 of 15

4. A coke coil has:


Question 4 of 15

5. In a circuit, the current lags behind the voltage by a phase difference of π/2, the circuit will contain which of the following:


Question 5 of 15

6. In the circuit shown below what will be the reading of the voltmeter and ammeter? (Total impedance of circuit Z = 100




Question 6 of 15

7. The current gain for a transistor working as common base amplifier is 0.96. If the emitter current is 7.2 mA, the base current will be:


Question 7 of 15

8. If an AC main supply is given to be 220 v. The average emf during a positive half cycle will be


Question 8 of 15

9. An AC source of angular frequency ω is fed across a resistor R and a capacitor C in series. The current registered is I. If now the frequency of source is changed to ω/3 (but maintaining the same voltage), the current in the circuit is found to be halved. Calculate the ratio of reactance to resistance at the original frequency ω


Question 9 of 15

10. If the magnetic field of a light wave oscillates parallel to y-axis and is given by By = Bm sin (kz - ωt), the direction of wave travel and the axis along which the electric vector oscillates is:


Question 10 of 15

11. An inductor coil of inductance L is cut into two equal parts and both the parts are connected in parallel. The net inductance is:


Question 11 of 15

12. In a AC circuit the voltage and current are described by V = 200 sin (319t – π/6) volts and i = 50sin (314t + π/6)mA respectively. The average power dissipated in the circuit is:


Question 12 of 15

13. A coil has an inductance of 0.7 Henry and is joined in series with a resistance of 220 Ω. When the alternating emf of 220 V at 50 Hz is applied to it then the phase through which current lags behind the applied emf and the wattles component of current in the circuit will be respectively


Question 13 of 15

14. The pressure exerted by an electromagnetic wave of intensity 1 (watt/m²) on a non-reflecting surface is: [c is the velocity of light]


Question 14 of 15

15. Frequency of infrared wave is approximately:


Question 15 of 15


Test By Subject
Test By Topics
Have any Problem or Error please mention in below comments section.

Leave a Reply

Your email address will not be published. Required fields are marked *