Advertisements
Advertisements
Question
An electrical appliance is rated as 60 W – 150 V.
What do you understand by this statement?
Advertisements
Solution
60 W – 150 V power rating of the appliance means that if the appliance is put in the circuit on 150 volts, it will consume 60 w electrical power, i.e. electric energy consumed by it in 1 sec. is 60 J.
APPEARS IN
RELATED QUESTIONS
When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.
A lightning conductor saves the building from lighting.
Match the following
| Column A | Column B |
| A. Two like charges | 1 negative charge |
| B. Two unlike charges |
2 repel |
| C. Silver is a | 3 insulator |
| D. Silk is an | 4 attract |
| E. Ebonite rod rubbed with fur acquires | 5 conductor |
The rod in a gold leaf electroscope is made up of
Explain the charging by induction in terms of movement of electrons.
Figure below shows a metal rod AB placed on an insulating stand.
In figure (a) a negatively charged ebonite rod C is touched with the metal rod AB, while in figure (b), the negatively charged ebonite rod C is held near the rod AB. State the kind of charges at the ends A and B of the rod, in each case.
Describe a pith ball electroscope. how can you use it to test whether a body is charged or uncharged?
How will you use a gold leaf electroscope to find out whether a body is charged or uncharged?
How will you use a gold leaf electroscope to find out whether the charge on a charged body is positive or negative?
What causes lightning?
