Exams › NEET › Physics

The magnetic field of a given length of wire carrying a current for a single turn circular coil at centre is B, then its value for two turns for the same wire when same current passing through it is :-

1. B 4
2. B 2
3. 2B
4. 4B

Correct answer: 4B

Related NEET Physics questions

• Field at the centre of a circular coil of radius r , through which a current I flows is
• The magnetic field inside a long solenoid is -
• A long copper tube of inner radius R carries a current i . The magnetic field B inside the tube is
• The magnetic induction at any point due to a long straight wire carrying a current is
• The earth's magnetic induction at a certain point is . / 10 7 2 5 m Wb   This is to be annulled by the magnetic induction at the centre of a circular conducting loop of radius 5 cm . The required current in the loop is
• A charge of 1C is moving in a perpendicular magnetic field of 0.5 Tesla with a velocity of 10 m/sec. Force experienced is:

⚔️ Practice NEET Physics free + battle 1v1 →