English

How Does the Heat Produced by Die Passage of Current in a Metallic Wire Depend on the Resistance of the Wire. - Physics

Advertisements
Advertisements

Question

How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.

One Line Answer
Advertisements

Solution

The heat produced is proportional to the resistance of the wire.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Electric Power and House hold Circuits - Short Answers

APPEARS IN

ICSE Physics [English] Class 10
Chapter 8 Electric Power and House hold Circuits
Short Answers | Q 71.2

RELATED QUESTIONS

The diagram below shows a circuit containing a lamp L, a voltmeter and an ammeter,. The voltmeter reading 3 V and the ammeter reading is 0.5 A. 

  

 What is the resistance of the lamp?
 What is the power of the lamp?


Which of the following is likely to be the correct wattage for an electric iron used in our homes? 

(a) 60 W
(b) 250 W
(c) 850 W
(d) 2000 W


Electrical power p is given by the expression P = (Q × V) ÷ time. Express the power P in terms of current and resistance explaining the meaning of symbols used there in.


Two bulbs are rated 60 W, 220 V and 60 W, 110 V respectively. Calculate the ratio of their
resistances


A bulb with rating 250 V, 100 W is connected to a power supply of 220 V situated 10 m away using a copper wire of area of cross-section 5 mm2. How much power will be consumed by the connecting wires? Resistivity of copper = 1.7 × 10−8 Ωm


The diagram below shows a magnetic kept just below the conductor AB which is kept in North South direction.

(i) In which direction will the needle deflect when the key is closed ?
(ii) Why is the deflection produced ?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB ?
(iv) Name one device which works on this principle.


Can you produce electricity from magnetism?

What changes in energy occur in an electric heater?


Three 250 W heaters are connected in parallel to a 100 V supply, Calculate the energy supply in kWh to the three heaters in 5 hour.


An electric lamp A of 40 W and another electric lamp B of 100 W are connected to 220 V supply. Calculate the ratio of their filament resistances?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×