A heater is rated at 1200 W when the electric current is 5 A. Calculate the resistance and the potential difference.

Numerical

We know that,

P=VI= I1R

Given, P = 1200 watt , I= 5A

R = `"P"/"I"^2 = 1200/(5 xx 5) = 48 Omega`

and, V = `"P"/"I" = 1200/5` = 240 V

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Chapter 4: Electricity and Magnetism - Exercise 4.2 ii [Page 188]

Chapter 4 Electricity and Magnetism
Exercise 4.2 ii | Q 3 | Page 188

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