magnetic effects

CAREER POINT MAGNETIC EFFECTS OF CURRENT MM 39 1 Marks What will be the frequency of the of a alternating current if its direction changes after every 0.01 sec ? What are the characteristics of a fuse wire ? The word generator is misnomer ? Explain why ? If you look in the solenoid and the current appears to flow in the clock wise direction , which pole of the solenoid are you looking from ? Why ? 2 Marks What is the function of the earth wire in the metallic appliances ? Describe an activity to show the action of electric fuse ? Draw the magnetic lines of forces around a circular conductor ? How can we determine the magnetic strength at a point for a circular conductor ? Explain Flemings left hand rule ? Where is it used in our day to day life ? What are the factors effecting a electromagnet ? 3 Marks Explain what is short circuiting and overloading in a electrical circuit ? Explain with the help of an activity what happens when a current carrying conductor is placed in a magnetic field ? What is electromagnetic induction ? Give an experiment to show electromagnetic induction ? What is the difference between electric and magnetic field ? Why the domestic circuits are in parallel ? 5 Marks Explain the working of a electric AC generator ? Draw a domestic circuit showing a 5A socket, a bulb and a refrigerator connected to electrical circuit