What is an electromagnet? Name two factors on which the strength of ma

1.	What is an electromagnet? Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.
Answer» An electromagnet is a temporary strong magnet made from a piece of soft iron when current flows in the coil wound around it. It is an artificial magnet. The strength of magnetic field of an electromagnet depends on: (i) Number of turns: The strength of magnetic increases on increasing the number of turns of winding in the solenoid. (ii) Current: The strength of magnetic field increases on increasing the current through the solenoid.

What is an electromagnet? Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.

Answer»

An electromagnet is a temporary strong magnet made from a piece of soft iron when current flows in the coil wound around it. It is an artificial magnet.

The strength of magnetic field of an electromagnet depends on:

(i) Number of turns: The strength of magnetic increases on increasing the number of turns of winding in the solenoid.

(ii) Current: The strength of magnetic field increases on increasing the current through the solenoid.

Discussion

No Comment Found

Related InterviewSolutions

State the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
How is the magnetic field due to a straight current carrying wire affected if current in wire is (a) decreased, (b) reversed?
State a law, which determines the direction of magnetic field around a current carrying wire.
Suggest two ways in an a.c. generator to produce a higher e.m.f.
In an a.c. generator the speed at which the coil rotates is doubled. How would this affect (a) the frequency of output voltage, (b) the maximum output voltage is doubled.
The following diagram in Fig. 10.44 shows a coil X connected to a sensitive centre –zero galvanometer G and a coil P connected to a battery through a switch S.(a) Describe the observation when the switch S is (i) closed suddenly, (ii) then kept closed, (iii) finally opened.(b) Name and state the law which explains the above observations.
What determines the frequency of a.c. produced in a generator?
State two dis-similarities and one similarity between a d.c. motor and an a.c. generator.
The following diagram shows a spiral coil wound on a hollow carboard tube AB. A magnetic compass is placed close to it. Current it switched on by closing the key. (a) What will be the polarity at the ends A and B? (b) How will the compass needle be affected? Give reason.

What is an electromagnet? Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment