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All Physics (34) Chemistry (16) Maths (1) Biology (3)

Priyanshu Tyagi June 24 2022

Why manganin is used for making standard resistor?

#Current Electricity

Priyanshu Tyagi June 24 2022

The ratio of number of free electrons to holes ne/nh for two different materials A and B are 1 and <1 respectively. Name the type of semi conductor to which A and B belongs.

#Electronic Devices

Priyanshu Tyagi June 24 2022

Why does the conductivity of a semi conductor change with the rise in temperature?

#Electronic Devices

Manish June 24 2022

How in case of free fall you feel weightless, even though gravity is pulling you down? (Ignore Air resistance)

RAJIV PANDEY June 24 2022

It is believed that neutrons in the nucleus help to stable it. Then why is it observed that some nuclei are more stable than others?

#Atoms and Nuclei

Pooja Yadav June 23 2022

Why do we use multiples of 11 as voltage transmission in India i.e 11kV, 22kV ?

#Electromagnetic Induction and Alternating Currents

Priyanshu Tyagi June 23 2022

Why stationary charges and constant currents do not produce electromagnetic waves?

#Electromagnetic Waves

RAJIV PANDEY June 23 2022

What is the name of the most stable nuclei found in universe?

#Atoms and Nuclei

Deepak June 11 2022

Which topics a student must revise before NEET?

Dharmendra singh May 24 2022

Name the one position where electric potential is zero but electric field is not zero.

#Electrostatics

Dharmendra singh May 24 2022

Can two equipotential surfaces intersect each other?

#Electrostatics

Deepak May 23 2022

Why electrons does not flow from negative electrode to positive electrode through electrolyte within any voltaic cell like Daniel cell ?

#Current Electricity

Deepak May 21 2022

Is energy of an electron at 0 K is zero?

#Communication Systems

Dharmendra singh May 19 2022

What is weight of a body at the centre of Earth?

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