In a solenoid, the current flowing through the wire is I and number of – McqOptions

MCQOPTIONS

1.	In a solenoid, the current flowing through the wire is I and number of turns per unit length is n. This gives a magnetic field B inside the solenoid. If number of turn per unit length is increased to 2n, what will be the value of magnetic field in the solenoid?
A.	B
B.	2B
C.	B / 2
D.	B / 4
Answer» C. B / 2

Discussion

No Comment Found

Related MCQs

A charge at rest produces:
An electromagnet is
A square loop of side l is carrying current I, as shown. Find the magnetic field induction at the centre of the loop.
A straight conducting wire carries a DC current through it. Which one of the following statements is true regarding the magnetic field around the wire?
Consider a long solenoid of 'n' turns per unit length and carrying a current 'I'. The magnetic field in the interior of the solenoid was shown to be givenby Bo= ___________.
A positively charged particle projected towards east is deflected towards north by a magnetic field. The field may be:
For a current carrying conductor, in the Maxwell's 'Right hand thumb law' the thumb points towards the
A galvanometer can be converted into at ammeter by connecting
Magnetism at the center of a bar magnet is ______?
A metal when brought near the end of a strong magnet, it gets repelled. This metal is: