What is a rectifier used for?
Convert ac voltage to dc voltage is correct per What is a rectifier used for? principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Current Electricity and Experimental Physics 2
This category includes questions on current electricity and experimental physics, focusing on core concepts, problem solving, and laboratory methods. It helps students deepen their understanding and prepare for exams that test advanced electricity topics and experimental techniques.
Filter questions
If A m and A c are the amplitude of the modulating signal and the carrier wave, then which of the following is correct t
Am ≤ Ac is correct per If A m and A c are the amplitude of the principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
[Image: https://www.selfstudys.com/uploads/external-images/kHT8FL0CDGBiIFwLMrRRAbhWH1YZN2r7lbrsjYNH.png] If the glow of
NAND is correct per [Image: https://www.selfstudys.com/uploa principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Relation between half life (T) and decay constant (T 0 ) for a radioactive element is:
Half-life T½=0.693/λ, relation between decay constant and half-life.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
How many isotopes does hydrogen have?
Hydrogen has 3 isotopes: protium ^1H, deuterium ^2H, tritium ^3H.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Two identical photo-electrode 1 and photo-electrode 2 receive the light of frequency f 1 and f 2 respectively of the sam
Same intensity different frequency, higher frequency gives higher KE but same photon number? Current same.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
If the intensity of incident photons is increased then the photoelectric current will-
Increasing intensity increases number of photons, photoelectric current increases, KE same.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
An AC generator consists of a coil of 800 turns and a cross-sectional area of 2.5 m 2 . The coil is placed in a uniform
Emf e=NBAω sinωt, peak e0=NBAω, calculate per given B,A,N.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Which of the following is associated with Lenz's law?
Lenz law associated with conservation of energy and opposition to change.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Which of the following material when placed in an external magnetic field behaves as shown in the figure? [Image: https:
Figure shows diamagnetic expulsion or paramagnetic attraction per susceptibility.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
The electric current of an electromagnet is switched off then the magnetic property of the electromagnet will___
Electromagnet loses magnetism when current off, soft iron core, temporary magnet.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
Choose the incorrect statement:
Nickel and Cobalt do not get attracted by magnet. is correct per Choose the incorrect statement: principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
