Advertisements
Advertisements
प्रश्न
Describe briefly one way of producing an induced current in a coil. State one factor that determines the magnitude of induced e.m.f.
Advertisements
उत्तर
To produce an induced current in a coil, a magnet is moved along the axis of coil. The magnitude of induced e.mi. depends on the strength of magnet.
संबंधित प्रश्न
State two ways of magnetising an iron piece?
Name and state the rule by which polarity at the ends of a current carrying solenoid is determined.
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.
Name the material used for making the armature of an electric bell. Give a reason for your answer.
Complete the following sentence :
On reserving the direction of current in a wire, the magnetic field produced by it gets _____.
What is an electromagnet?
A straight current-carrying conductor is kept in a magnetic field. It Experiences a force. State three factors on which the magnitude of force Experienced by the conductor depends. Under what condition will the conductor Experience no force?
What energy conversion takes place during the working of a d c motor?
What are the factors that govern the magnitude of force acting on a current carrying conductor which is freely suspended in a magnetic field?
Point out three differences between an electromagnet and a bar (or permanent) magnet.
