The resistance of a heater coil is 110 ohm. A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11 ohm to a 220 volt main line. The heater operates with a power of 110 watt. The value of R in ohm is
Text Solution
Verified by ExpertsThe correct answer is:
A
Power consumed by heater is 110 W so by using 
Also from figure 
and 
So 
Applying Ohms law for resistance R, V = iR
⇒ ⇒ 
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