General Physics Questions And Answers


Q1. 
Calculate the magnetic flux produced when the magnetic field is parallel to the surface area.

Ans.
Zero


Q2. 
What is the instrument used in Faraday’s experiment?

Ans.
Galvanometer


Q3. 
Which among the following affects the deflection in the galvanometer?

Ans.
Speed with which the bar magnet is pulled towards or away from the coil


Q4. 
In the second experiment, Faraday replaced ‘X’ with ‘Y’ for checking the deflection in the galvanometer. Identify X and Y.

Ans.
X ➔ Bar magnet; Y ➔ Current carrying coil


Q5. 
The galvanometer shows deflection even when the bar magnet is stationary.

Ans.
False


Q6. 
If the frequency of the ac source in a series LCR-circuit is increased, how does the current in the circuit change?

Ans.
Increases then decrease


Q7. 
How will the capacitive reactance be affected if the frequency is doubled?

Ans.
Halved


Q8. 
Give the SI unit of capacitive reactance.

Ans.
Ωm


Q9. 
The capacitive reactance varies directly with the frequency.

Ans.
False


Q10. 
What is the reactance of an inductor in a dc circuit?

Ans.
Zero