Advertisements
Advertisements
Question
How can you check just by seeing the meter whether the electricity is in use or not?
Solution
If the electricity is in use, the counter fixed on the armature of the meter rotates and reads the number of rotations
(A red mark is seen rotating).
APPEARS IN
RELATED QUESTIONS
To find whether the charge on a body is positive or negative, an uncharged electroscope is used.
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 |
When an ebonite rod is rubbed with fur, the rod acquires
A gold-leaf electroscope is to be charged positively by conduction. For this
How will you show that like charges repel and unlike charges attract each other?
In each of the following cases, State which body loses electrons:
(a) A glass rod when rubbed with silk.
(b) An ebonite rod when rubbed with fur.
A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on the rod B if charging is to be done by conduction?
What are the effects of lightning?
How is a tall building protected from damage due to lightning?
State three safety measures that you will observe in thunder storm.