# Magnetic Effect Of Electric Current Class 12 Questions And Answers Pdf

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Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks. Two circular coils P and Q are made from similar wires but radius of Q is twice that of P.

Download in PDF form or use it online without downloading free. Law Of Magnetic Poles: It states that like poles repel while unlike poles of magnets attracts each other. Thus, two N-poles repels, two S-poles repel while N-pole attracts S-pole.

## Important Questions for Class 12 Physics with Answers

They are lines drawn in a Magnetic field along which a North magnetic pole moves. Magnetic field lines are called as Magnetic lines of force.

Inside the magnet, their direction is from South pole to North pole. Therefore magnetic field lines are closed curves. If the radius increases, the magnetic strength at the centre decreases.

Forefinger points in the direction of magnetic field and centre finger in the direction of current, then the thumb gives the direction of force acting on the conductor. Refer to figure T Text book. With the rotation of the coil, the shaft attached to it also rotates. Stretch the thumb, forefinger and middle finger of right hand such that they are mutually perpendicular.

Forefinger points in the direction of magnetic field and centre finger in the direction of induced current, then the thumb gives the direction of motion of the conductor. In our houses we receive AC electric power of V with a frequency of 50Hz.

Magnetic field lines around a bar magnet. Right hand thumb rule 3. Magnetic field lines through and around a current carrying solenoid. An electromagnet. A simple electric motor 6. Electric generator.

Magnetic field lines around a bar magnet 2. Direction of electric current in a simple electric circuit.

## Magnetic Effects of Electric Current-NCERT Solutions

Thanks for visiting our website. Our aim is to help students learn subjects like physics, maths and science for students in school , college and those preparing for competitive exams. All right reserved. All material given in this website is a property of physicscatalyst. Class 10 Magnetic effects of current Extra Questions One marks questions Question 1 If the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force on the wire?

State two properties of magnetic lines of force? Why does a compass needle deflected when brought near a bar magnet? Compass needle experience a force is the magnetic field of a bar magnet due to which it deflects. The magnetic field lines in a given region is uniform. Draw a diagram to represent. Write two ways to induce current in a coil?

CBSE Class 12 Physics Magnetic Effect of Current Solved Examples. Ex.7 Electric currents i1 and i2 are flowing in two mutually perpendicular Click to View or Download pdf file › Download Printable Worksheets, test papers for Class 12 Physics with questions answers for all topics and chapters as per CBSE​, NCERT.

## Magnetic Effects of Electric Current-NCERT Solutions

False, an electric fuse is used to prevent an electrical circuit from overloading and hence short circuit. A closed circuit is an electric path which begins from the positive terminal of a cell or battery and terminates at its negative terminal without any break. So, her electromagnet is stronger than Boojho. Batteries used in tractors, trucks and inverters are also made from cells. You can download class 10 maths NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations.

Why does a compass needle get deflected when brought near a bar magnet? A compass needle is a small bar magnet with north and south pole. Draw magnetic field lines around a bar magnet.

They are lines drawn in a Magnetic field along which a North magnetic pole moves. Magnetic field lines are called as Magnetic lines of force. Inside the magnet, their direction is from South pole to North pole.

Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.

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