Asked/Added Questions From NCERT:

Question 1. Asked on :06 August 2020:05:42:51 PM

State Biot-Savart's law?

-Added by Shruti Srivastva Physics » Magnetic Fields Of Electric Current


Anjali Kumari
The Biot-Savart law states how the value of the magnetic field at a specific point in space from one short segment of current-carrying conductor depends on each factor that influences the field.

-Answered by Anjali Kumari On 13 October 2020:07:45:47 PM

Question 2. Asked on :16 October 2019:08:03:20 PM

 What are ‘magnetic field lines’? How is the direction of a magnetic field at a point determined ?

-Added by Himanshi Verma Science » Magnetic Fields Of Electric Current


Nishant Verma

 The magnetic field lines are the pictorial representation of the strength and direction of the magnetic field. 

The direction of the magnetic field at a point can be found by placing a small magnetic compass at that point. The north end of the needle of  a compass indicates the direction of magnetic field at a point where it is placed.

-Answered by Nishant Verma On 17 October 2019:02:31:40 PM

Question 3. Asked on :16 September 2019:10:13:21 AM

 परिनालिका क्या होती है ?

-Added by Aarohi Chauhan Science » Magnetic Fields Of Electric Current


priyanshu kumar

परिनालिका की परिभाषा है :- जब किसी चीनी मिट्टी से बनी बेलनाकार नलिका जिसकी लम्बाई अधिक हो तथा त्रिज्या बहुत कम हो , पर ताँबे का तार लपेटा जाता है इस व्यवस्था को परिनालिका कहते है।

-Answered by priyanshu kumar On 02 October 2019:01:22:34 PM

Question 4. Asked on :21 August 2019:06:06:58 PM

 Write the principle of Electric Motor?

-Added by Himanshi Verma Physics » Magnetic Fields Of Electric Current


Himanshi Verma

 An electric motor utilizes the magnetic effect of current. It works on the principle that when a rectangular coil is placed in a magnetic field and current is passed  through it a torque acts on the coil which rotates it continuously. When the coil rotates the shaft to it also rotates and electrical energy supplied to the motor is converted into mechanical energy.

-Answered by Himanshi Verma On 21 August 2019:06:09:13 PM


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