1.

How much current will an electric heater coil draw from a 220 V source, if the resistance of the heater coil is 100 Omega?

Answer»

SOLUTION :We are given, source voltage V = 220V, : Resistance of heater coil `R = 100 Omega`.
Now, `V =IR`
`:. I =V/R = 22 V//100 Omega = 2.2A`
Important note: When different ELECTRICAL devices having different resistances areconnectedseparately to the same source, current drawn by them are different.


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