Question

Derive the expression for Joule's heating effect of current..

No Spam Ans !!!

Answer 1

╔════════════════╗

...HERE GØΣS UR ANS...

╚════════════════╝

$\huge{\bold{\red{HELLO\:!!}}}$

JOULE'S HEATING EFFECT

According to Joules law of heating, when a current I flows through a resistance R then :

Heat produced is :

(I) Directly proportional to the square of current for a given resistance

(II) Directly proportional to the resistance of given circuit.

(III) Directly proportional to the time for which the resistance flows through the resistor.

So eqⁿ is $\bold{\huge{\red{H=I^2Rt}}}$

$\bold{\huge{\boxed{\pink{DERIVATION}}}}$

let us consider a resistance R , in which I amount of current flows.

Work must be done by current to move continuously.

W=Qx V

BUT Q=IXt

W=IxVxt

but from ohms law: V=IR

$\bold{\huge{\red{W=I^2Rt}}}$

assuming the electrical energy consumed is converted into heat energy .

we write work done as Heat  produced.

so $\bold{\underline{\huge{\red{H=I^2Rt}}}}$

$\bold{\huge{\boxed{\pink{APPLICATION}}}}$

❶ In electrical heaters.

❷ In electrical iron

❸ In electrical fuse wire

❹ In electrical bulb

$<marquee direction="left" height="80" behavior="scroll" >LovePhysicsandGenerateHeat</marquee>$

$\bold{\huge{\boxed{\red{\mathscr{ThankYou}}}}}$

$\bold{\underline{\huge{\red{\mathscr{PlzMarkBrainliest}}}}}$

Answer 2

Answer:

JOULE'S HEATING EFFECT

According to Joules law of heating, when a current I flows through a resistance R then :

Heat produced is :

(I) Directly proportional to the square of current for a given resistance

(II) Directly proportional to the resistance of given circuit.

(III) Directly proportional to the time for which the resistance flows through the resistor.

So eqⁿ is \bold{\huge{\red{H=I^2Rt}}}