Question

Physics Question :)!

An Heater has a rating 144W and 120V, the resistance of element of Heater when in use is ?

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Answer 1

Answer:

Electrical Power, W= V 2/R

Resistance, R= v2/w

R= 120×120Ω/100

R=144Ω

Answer 2

★ Given That :

• » Power of Heater (P) = 144W
• » Potential Difference of Heater (v) = 120

★ Need To Find :

• ‣ Resistance of Heater ?

★ Formula Used Here :

• ⚘ P = V² / R ⚘

___________________________

✪ Where :

• ➬ P = Power
• ➬ V = Potential Difference
• ➬ R = Resistance

☢ Putting Values in Formula :

• ➵ P = V² / R
• ➵ 144W = ( 120V) ² / R
• ➵ 144 = 14400 / R
• ➵ 144 × R = 14400
• ➵ R = 14400 / 144
• ➵ Resistance = 100ohm

✇ Therefore :

❝ ∴ Resistance of Heater will be 100Ω ❞

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