Two coils connected in series have resis...

Two coils connected in series have resistance of `600K Omega` and `300 Omega` at `20^@C` and temperature coefficient of` 0.001` and `0.004 (.^@C)^-1` respectively. Find resistance of the combination at a temperature of `50^@C`. What is the effective temperature coefficient of combination?

`462 Omega`

`954 Omega`

`1806 Omega`

`214 Omega`

Text Solution

Verified by Experts

The correct Answer is:

A, B

Topper's Solved these Questions

CURRENT ELECTRICITY
RESONANCE|Exercise Exercise-1 (Part-3)|2 Videos
CURRENT ELECTRICITY
RESONANCE|Exercise Exercise-2 (Part-1)|25 Videos
CURRENT ELECTRICITY
RESONANCE|Exercise Exercise-1 (Part-1)|46 Videos
COMMUNICATION SYSTEMS
RESONANCE|Exercise Exercise 3|13 Videos
DAILY PRACTICE PROBLEM
RESONANCE|Exercise DPP.No.71|1 Videos

Similar Questions

Explore conceptually related problems

A conducting wire has resistance 16 Omega at 15^0 C and 20 Omega at 100^0 C find temperature of coeffecient of resistance

Resistance is 16 Omega at 15^0C and 20 Omega at 100^0 C find coefficient of resistivity

A plantinum wire has resistance of 10 Omega at 0^(@)C and 20 Omega at 273^(@)C . Find the value of coefficient of resistance.

A tungsten coil has a resistance 16 Omega at 20^@C . If the temperature coefficient of resistance of tungsten is 0.004^@C^(-1) , calculate the resistance of the coil at 80^@C .

The resistance of a coi is 4.2Omega at 100^(@)C and the temperature coefficient of resistance of its material is (0.004)/(.^(@)C) . Its resistance at 0^(@)C is

The resistance of a bulb filmanet is 100Omega at a temperature of 100^@C . If its temperature coefficient of resistance be 0.005 per ^@C , its resistance will become 200 Omega at a temperature of

Two wires of different materials P and Q have resistance per unit lengths 50 Omega km^(-1) and 25 Omega km^(-1) and temperature coefficients of resistance, 0.0025 ^@C^(-1) and 0.00075^@C^(-1) respectively. If it is desired to make a coil having 700 Omega resistance and a temperature coefficient of resistance 0.001^@C^(-1) by using suitable length of two wires in series. Calculate their respective length.

The resistance of a metallic conductor is 50Omega at a temperature of 100^(@)C .If its temperature coefficient of resistance is 0.005^(@)C^(-1) ,then its resistance will become 125Omega at a temperature of

A wire has a resistance of 3.1 Omega at 30°C and a resistance 4.5 Omega at 100°C. The temperature coefficient of resistance of the wire

A platinum wire has a resistance of 2.62 Omega at 15 ^(0)C and 3.29 Omega at 80 ^(@)C . Find the temperature coefficient of the resistance of platinum wire.

RESONANCE-CURRENT ELECTRICITY-Exercise-1 (Part-2)

Find the current through the 10(Omega)resistor shown in figure.
Text Solution
|
The efficiency of a cell when connected to a resistance R is 60 %. Wha...
Text Solution
|
Two coils connected in series have resistance of 600K Omega and 300 Om...
Text Solution
|
Two coils connected in series have resistance of 600K Omega and 300 Om...
Text Solution
|
Each resistance shown in the network is in ohm. Current through the re...
Text Solution
|
Two electic bulbs marked 25 W -220 V and 100 W - 220 V are connected i...
Text Solution
|
In the figure shown, each resistor is of 20 Omega and the cell has emf...
Text Solution
|
Arrange the order of power dissipated in the given circuits, if the sa...
Text Solution
|
Five identical resistors each of resistance 1Omega are initially arra...
Text Solution
|
Four identical bulbs each rated 100 watt, 220 volts are connected acro...
Text Solution
|
The current i in the circuit (see figure) is
Text Solution
|
Three equal resistors connected in series across a source of emf toget...
Text Solution
|
The given Wheatstone bridge is showing no deflection in the galvanom...
Text Solution
|
Three equal resistace, each of R ohm, are connectedd as shown in the f...
Text Solution
|
A wire of resistance 0.1 cm^(-1) bent to form a square ABCD of side 10...
Text Solution
|
In the circuit shown in Fig.6.2, the heat produced in 5Omega resistor,...
Text Solution
|
A 50 W bulb is in series with a room heater and the combination is con...
Text Solution
|
The equivalent resistance between the points A and B is:
Text Solution
|
A battery of internal resistance 4Omega is connected to the network of...
Text Solution
|
In these circuits all the batteries are indentical and have negllgible...
Text Solution
|