A 1250 W heater operates at 115 V. What is the resistance of the heating coil?

Physics · Class 12 · CBSE — Current Electricity

1. 1.6 \(\Omega\)
2. 13.5 \(\Omega\)
3. 1250 \(\Omega\)
4. 10.6 \(\Omega\)

Answer

(B) 13.5

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• A wire has a resistance of 3.1 at 30° C and a resistance 4.5 at 100 °C. The temperature coefficient of…
• When three identical bulbs of 60-200 volt rating are connected in series to a 200 volt supply, the power…
• Four resistors, each of resistance R and a key K are connected as shown in the figure. The equivalent…
• A student measures the terminal potential difference (V) of a cell (of emf and internal resistance r) as a…
• A current flows through a cylindrical conductor of radius R. The current density at a point in the conductor…
• A cell of internal resistance r connected across an external resistance R can supply maximum current when
• The resistivity of the potentiometer wire is 10 -7 m. Its area of cross-section is 10 -6 m 2 . When a current…
• What length of the wire (specific resistance 48 10 -8 m) is needed to make the resistance of 4.2 ? (Diameter…

More Current Electricity questions · Browse all practice questions