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Power, P = Work done / time = 45000 / 4 × 60 = 187.5 W
Power, P = I^2R
R = P/I^2 = 187.5 / 36 = 5.2 ohm
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A soldering rod iron draws n energy of 45000 J in 4 minutes when the current flowing through the element is 6 A. Calculate the resistance of its heating element.
☆5.2 ohm is the resistance of its heating element.
RESISTANCE:-
✿ The S.I Unit of Resistnce is ohm.
✿ Ohms are named after Georg Simon Ohm.
✿ Resistance is an electrical quantity that measures how a device or material reduces the electric current that flows through it.
POWER:-
✿ Power is the amount of energy transferred per unit time.
✿ The S.I Unit of Power is watt.
✿ Power is scalar quantity.
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