Question

An electric iron of resistance 200 takes a current of 5 4 Calculate the
beat developed in 30 s.​

Answer 1

Answer:

heat developed in electric iron in 30 seconds is is 150 kilojoules per second

Answer 2

➠ Correct questíon :-

➝ An electric iron of resistance 200ohm takes a current of 5A. Calculate the heat developed in 30s.

➠ Gíven :-

➝ Resistance, R = 200ᘯ

➝ Current, I = 5A

➝ Time, t = 30s

➠ To fínd :-

➝ the heat developed in 30s

➠ Formula requíred :-

$\longrightarrow \boxed{\sf H = I²Rt }$

there,

↬H = heat

↬I = current

↬R = resistance

↬t = time

➠ Solutíon :-

using formula,

$\Longrightarrow \rm H = {I}^{2} Rt$

$\Longrightarrow \rm H = {5}^{2} \times 200 \times 30$

$\Longrightarrow \boxed{ \rm H = 150000 j }$

Hence,the heat developed in 30s is 150000 joules.

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Additional information....

➤ What is heat ?

• heat is a form of energy that causes a difference in temperature, or the perception of warmth. An example of heat is hot water.

◉ SI unit of Heat is : Joules

➤ What is current ?

• An electric current is a flow of electric charge in a circuit. More specifically, the electric current is the rate of charge flow past a given point in an electric circuit.

◉ SI unit of current is : Ampere

➤ What is Resistance ?

• Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

◉ SI unit of resistance is : ohms