हिंदी

Name Two Effects Produced by Electric Current. - Science

Advertisements
Advertisements

प्रश्न

Name two effects produced by electric current. 

 

Advertisements

उत्तर

The two effects produced by an electric current are:
(i) Heating effect
(ii) Chemical effect

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Electricity - Exercise 8

APPEARS IN

लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 1 Electricity
Exercise 8 | Q 3

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

By what name is the physical quantity coulomb/second called?


 Write down the formula which relates electric charge, time and electric current


If the charge on an electron is 1.6 × 1019 coulombs, how many electrons should pass through a conductor in 1 second to constitute 1 ampere current?


One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor?


(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:

(i) Total resistance.
(ii) Current shown by the ammeter 


Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line. 

(a) Which circuit would have the highest voltage across each bulb?


 An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?


The rating of a fuse connected in the lighting circuit is:
(a) 15 A (b) 5 A (c) 10 A (d) Zero


Three resistors of 6.0 𝛀, 2.0𝛀 and 4.0𝛀 are joined to an ammeter A and a cell of e.m.f. 6.0 V as
shown in fig 8.52 Calculate:
(a) the effective resistance of the circuit and
(b) the reading of ammeter. 

 


What do you mean by conductance of a conductor of a solution?

Complete the following sentence:

Fuse wire has a ............ Melting point and it is made of an alloy of ......... and if the current in a circuit rises too high, the fuse wire ...........


Where is the main fuse in a house circuit connected?

Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.


Define the following:

Electromotive force


Why is an ammeter always connected in series while the voltmeter always in parallel to a circuit across which voltage is to be measured?

Tick (✓) the correct choice among the following :

Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?


Fig . shows the core of a transformer and i ts input and output connections 

State the material used for the core and describe th e structure of the core.
(a) Use the values given in the diagram to calculate the turns ratio for the transformer and connections, labeling all parts of the diagram .
(b) If a current of 2 A is taken from th e output, calculate th e current in the input circuit (Assume the transformer to be ideal ).


Electrical power P is given by the expression P = (Q × V) ÷ time

(a) What do the symbols Q and V represent?

(b) Express the power P in terms of current and resistance explaining the meanings of symbols used there in.


Kilowatt hour is the unit of


The flow of electric charge per unit time is called potential difference.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×