CBSE-2018
Embibe Experts Science Solutions for Exercise - CBSE-2018
Simple step-by-step solutions to CBSE-2018 questions of Magnetic Effects of Electric Current from EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from CBSE-2018 with Hints & Solutions
State Fleming's left hand rule.
Draw the pattern of magnetic field lines produced around a current carrying straight conductor passing perpendicularly through a horizontal cardboard. State and apply right-hand thumb rule to mark the direction of the field lines. How will the strength of the magnetic field change when the point where magnetic field is to be determined is moved away from the straight conductor? Give reason to justify your answer.
What is an electromagnet? List any two uses of it.
The change in magnetic field lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.
Draw a labelled diagram to show how an electromagnet is made.
State the purpose of soft iron core used in making an electromagnet.
List two ways of increasing the strength of an electromagnet if the material of the electromagnet is fixed.
Why should an ammeter have a low resistance?
