(i)Write the Joule's law of heating
(ii) A circuit diagram is given as shown below
Calculate
(a) the total effective resistance of the circuit.
(b) the total current in the circuit.
(c) the current through each resistor.
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When an electric current passes through a conductor for some time, the conductor gets heated up. Thus heating of a conductor due to the flow of electric current through it is known as Joule's law of heating.
Heat generated H=i2Rt
where i is the amount of current flowing though the conductor, R is the resistance of conductor and t is the time for which the current has FLOwn
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joule's law :-
They heat produced in a circuit is directly proportional to the product of square of electric current, resistance of meterial and time of flow of electric current.
a, effective resistance = 7/20
b, current = 400/7
c, current in R1=5A
R2= 2A
R3 = 1A
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