Heat is produced at a rate given by H in...

Heat is produced at a rate given by H in a resistor when it is connected across a supply of voltage V. If now the resistance of the resistor is doubled and the supply voltage is made V/3 then the rate of production of heat in the resistor will be

`H//18`

`H//9`

18 H

Text Solution

Verified by Experts

Topper's Solved these Questions

QUESTION PAPER 2012
WB JEE PREVIOUS YEAR PAPER|Exercise Subject: Physics|38 Videos
QUESTION PAPER 2011
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|39 Videos
QUESTION PAPER 2013
WB JEE PREVIOUS YEAR PAPER|Exercise Category-III|5 Videos

Similar Questions

Explore conceptually related problems

An alternating voltage given by V=140sin314t is connected across a pure resistor of 50Omega . Find the frequency of the source

The rate of heat developed in a resistor R connected to a supply of potential V is H . What will be the rate of heat developed if the potential difference is V//3 and the resistance doubled ?

IF the current supplied to a variable resistor is constant, draw a graph between voltage and resistance.

A light bulb is rated 100 W for 220 V ac supply of 50 Hz. Calculate the resistance of the bulb ,

A light bulb is rated at 100 W for a 220V ac supply. Calculate the resistance of the bulb.

A battery of emf 10V and internal resistance 3 ohm is connected to a resistor. If the current in the circuit is 0.5A, what is the resistance of resistance of resistor ? What is the terminal voltage of the battery when the circuit is closed?

How much current does a Geyser rated 2 KW draw when connected to 230V supply?

A resistance 1000 Omega is connected to a 100 V supply line. A voltmeter is connected across one end and the mid-point of the resistance and reads 40 V. Find the resistance of voltmeter.

A 24 v battery of internal resistance 4Omega is connected to a variable resistor. At what value of the current drawn from the battary is the rate of heat produced in the resistor maximum?

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2012-Subject: Physics

A straight wire of length 2 m carries a current of 10 A. If this wire ...
Text Solution
|
What is the phase difference between two simple harmonic motions repre...
Text Solution
|
Heat is produced at a rate given by H in a resistor when it is connect...
Text Solution
|
Two elements A and B with atomic numbers Z(A) and Z(B) are used to pro...
Text Solution
|
The de Broglie wavelength of an electron moving with a velocity c/2 (c...
Text Solution
|
Two infinite parallel metal planes, contain electric charges with char...
Text Solution
|
A box of mass 2 kg is placed on the roof of a car. The box would remai...
Text Solution
|
The decimal number equivalent to a binary number 1011001 is
Text Solution
|
The frequency of the first overtone of a closed pipe of length l(1) i...
Text Solution
|
The I-V characteristics of a metal wire at two different temperatures ...
Text Solution
|
In a slide calipers, (m+1) number of vernier divisions is equal to m n...
Text Solution
|
From the top of a tower, 80 m high from the ground, a stone is thrown ...
Text Solution
|
A Wheatstone bridge has the resistances 10Omega,10Omega,10Omega and 30...
Text Solution
|
An electric bulb marked as 50 W-200 V is connected across a 100 V supp...
Text Solution
|
In a mercury thermometer the ice point (lower fixed point) is marked a...
Text Solution
|
The magnetic flux linked with a coil satisfies the relation phi=4t^(2)...
Text Solution
|
Water is flowing through a very narrow tube. The velocity of water bel...
Text Solution
|
If the velocity of light in vacuum is 3xx10^(8)ms^(-1), the time taken...
Text Solution
|
A charge +q is placed at the origin of X-Y axes as shown in the figure...
Text Solution
|
What current will flow through the 2 KOmega resistor in the circuit sh...
Text Solution
|