Advertisements
Advertisements
Question
Length: metre scale: : Current: ______
Solution
Length: metre scale: : Current : ammeter.
APPEARS IN
RELATED QUESTIONS
Two identical resistros of `12 Omega` each are connected to a battery of 3V . Calculate the ratio of the power consumed by the resulting combinations with minimum resistance and maximum resistance.
Match the following
| 1. | Cell | used to open or close a circuit |
| 2. | Switch | safety device used in electric circuit |
| 3. | Circuit | A complete path for the flow of an electric current |
| 4. | Miniature circuit Breaker | Reset by hand, circuit becomes complete once again |
| 5. | Fuse | A device which converts chemical energy into electrical energy |
A cell, a resistor, a key and ammeter are arranged as shown in the circuit diagrams of Figure. The current recorded in the ammeter will be
 |
 |
 |
| (i) | (ii) | (iii) |
Electrical resistivity of a given metallic wire depends upon
Which of the following precautions need not be taken while using electric gadgets/appliances/circuits?
Why is an electric fuse required in all electrical appliances?
Draw the symbols of the following circuit components.
electric bulb
Electricity produced on rubbing is ______.
Choose from the options a, b, c and d given in Fig. 12.1 the figure which shows the correct direction of current.
A torch is not functioning, though contact points in the torch are in working condition. What can be the possible reasons for this? Mention any three.
