English

If the Lamps Are Both the Same in the Figure Given Below and If A1 Reads 0.50 A, What Do A2, A3, A4 And A5 Read? - Science

Advertisements
Advertisements

Question

If the lamps are both the same in the figure given below and if A1 reads 0.50 A, what do A2, A3, A4 and A5 read? 

Advertisements

Solution

Since the lamps are the same as given in the question, the resistance of both the lamps will be the same. Therefore, the current is distributed equally. Since the combination shows a 0.50 A current in the circuit by the ammeter A1, the current shown by A2, A3, A4 and A5 will be the same and equal to 0.25 A.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Electricity - Exercise 5

APPEARS IN

Lakhmir Singh Physics (Science) [English] Class 10
Chapter 1 Electricity
Exercise 5 | Q 55

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

What is the Flow of Charge Called?


A flash of lighting carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, what is the energy?


Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel to the electric supply at 220 V.  


(a) Draw a circuit diagram to show the connections.
(b) Calculate the current drawn from the electric supply.
(c) Calculate the total energy consumed by the two lamps together when they operate for one hour.


Name two effects produced by electric current. 

 


Which effect of current is utilised in the working of an electric fuse?


A wire of length 5 m has a resistance of 2.0 Ω calculate:
(a) the resistance of wire of length 1 m
(b) the equivalent resistance if two such wires each of length 2 m are joined in parallel.
(c) the resistance of 1 m length of wire of same material but of half diameter. 


Tell the odd one out. Give a proper explanation.


The following table shows the current in Amperes and potential differences in Volts.

  1. Find the average resistance.
  2. What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
  3. Which law will the graph prove? Explain the law.
V (volts) I (amp)
4 9
5 11.25
6 13.5

Give two uses of conductors.

The work done in moving unit positive charge across two points in an electric circuit is a measure of
           


Name the physical quantity which defines the rate of flow of charge.

Which type of current does a generator with commutator produce?

What is the criteria for selecting a fuse wire?


Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.


1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`


A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.


______ is used to measure the electric current.


Define an electric current.


  1. What is meant by electric current?
  2. Name and define its unit.
  3. Which instrument is used to measure the electric current? How should it be connected in a circuit?

Match the following:

1. 1 mA a. series
2. 1 pA b. ohmmeter
3. Ammeter  c. 10-6 ampere
4. Electrical resistivity d. 10-3 ampere

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×