Advertisements
Advertisements
Question
A portable radio has a built-in transformer so that it can work from the mains instead of batteries. Is this a set-up or step down transformer?
Solution
This is a step-down transformer that reduces voltage.
APPEARS IN
RELATED QUESTIONS
What are the two ways in which you can trace the magnetic field pattern of a bar magnet?
The strength of the magnetic field between the poles of an electromagnet would be unchanged if:
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
Insert two magnetic field lines on either side of the magnet using arrow head to show the direction of each field line.
State briefly the molecular theory of magnetism.
Draw diagram showing the arrangement of the lines of force for two magnets in line, with unlike poles facing one another.
Complete the following diagram of magnets to show the lines of force.
Inside the magnet, the field lines moves ____________.
If the key in the arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
