If a coil is wound around a steel core and electric current is passed – McqOptions

MCQOPTIONS

1.	If a coil is wound around a steel core and electric current is passed through the coil, the steel core acts as a?
A.	Electromagnet
B.	Permanent magnet
C.	Neither electromagnet nor permanent magnet
D.	Either electromagnet or permanent magnet
Answer» C. Neither electromagnet nor permanent magnet

Discussion

No Comment Found

Related MCQs

The magnetic field of the solenoid is 18.84mT, the current is 30A. Calculate the number of turns per unit length if the core is air.
What happens to the magnetic field in the solenoid when the current increases?
The magnetic field of the solenoid is 18.84mT, the current is 30A. Calculate the number of turns per unit length if the core is air?
The magnetic field of the solenoid is 18.84mT, the number of turns per unit length is 500 turns per metre. Calculate the current if the core is air.
The current in a solenoid is 30A, the number of turns per unit length is 500 turns per metre. Calculate the magnetic field if the core is air.
What happens to the magnetic field in the solenoid when the length of the solenoid increases?
What happens to the magnetic field in the solenoid when the number of turns increases?
What is the formula for the magnetic field due to a solenoid?
If a coil is wound around a steel core and electric current is passed through the coil, the steel core acts as a?
The magnetic field strength of a solenoid can be increased by inserting which of the following materials as the core?