Recent questions tagged thermal and chemical effects of current

+2 votes

1 answer

The electrochemical equivalent of a metal is 3.3 × 10^–7kg per coulomb. The mass of the metal liberated at the cathode

asked Apr 7, 2019 in Chemistry by kratos

+1 vote

1 answer

A wire when connected to 220V mains supply has power dissipation P1. Now the wire is cut into two equal pieces

asked Mar 28, 2019 in JEE by kratos

+3 votes

1 answer

The thermo emf of a thermocouple varies with the temperature θ .

asked Mar 10, 2019 in JEE by kratos

+1 vote

1 answer

Write any two factors on which thermo e.m.f. produced in thermocouple depends.

asked Feb 28, 2019 in Class 12 by kratos

+3 votes

1 answer

The thermo emf of a thermocouple varies with the temperature θ of the hot junction as E = aθ + bθ^2 in volt

asked Feb 28, 2019 in Class 12 by kratos

+1 vote

1 answer

An energy source will supply a constant current into the load.

asked Feb 24, 2019 in JEE by kratos

+2 votes

1 answer

The mass of a product liberated on anode in an electrochemical cell depends on.

asked Feb 15, 2019 in JEE by kratos

+2 votes

1 answer

If θi is the inversion temperature, θn is the neutral temperature,

asked Jan 30, 2019 in JEE by kratos

+1 vote

1 answer

An electric bulb is rated 220 volt 100watt.

asked Jan 26, 2019 in Class 12 by kratos

+1 vote

1 answer

A solution of AgNO3 is electrolysed for 30minutes through a current of 2.0amperes.

asked Jan 20, 2019 in Chemistry by kratos

+3 votes

1 answer

Antimony and Bismuth are usually used in thermocouple, because

asked Jan 15, 2019 in JEE by kratos

+2 votes

1 answer

Two electric bulbs marked 25W-220V and 100W-220V are connected in series to a 440V supply which of the bulbs will fuse?

asked Dec 23, 2018 in JEE by kratos

+3 votes

1 answer

Two voltameters, one of copper and another of silver, are joined in parallel.

asked Nov 16, 2018 in JEE by kratos

+2 votes

1 answer

The resistance of hot tungsten filament is about 10 times the cold resistance.

asked Nov 11, 2018 in JEE by kratos

+3 votes

1 answer

Time taken by a 836W heater to heat one litre of water from 10°C to 40°C is (a) 50s

asked Nov 11, 2018 in JEE by kratos

+1 vote

1 answer

Define electrochemical equivalent

asked Oct 23, 2018 in JEE by kratos

+1 vote

1 answer

The resistance of hot tungsten filament is about 10 times the cold resistance.

asked Oct 21, 2018 in JEE by kratos

+1 vote

1 answer

A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

asked Oct 19, 2018 in JEE by kratos

+3 votes

1 answer

The thermo-emf of a the thermocouple is 25V/°C at room temperature. A galvanometer of 40Ω resistance, capable of detecting current as low as 10^-5 A,

asked Sep 16, 2018 in JEE by kratos

+2 votes

1 answer

Two voltameters one of copper and another of silver, are joined in parallel. When a total charge q flows through the voltameters,

asked Sep 1, 2018 in JEE by kratos

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