An electric fuse is a safety device used in household circuits to prevent damage caused by overloading or excessive current. It is designed to break the circuit when the current exceeds a safe level, thus protecting the electrical appliances from potential damage. Thus, the correct purpose of an electric fuse is preventing damages due to overloading.
The correct option is (C): preventing damages due to overloading
Determine the equivalent resistance of the parallel combination of the two resistors (X and Y).
Study the circuit shown in which two resistors X and Y of resistances 3 Ω and 6 Ωrespectively are joined in series with a battery of 2V.
Find the current drawn from the battery by the series combination of the two resistors (X and Y).
Study the circuit shown in which two resistors X and Y of resistances 3 Ω and 6 Ω respectively are joined in series with a battery of 2V.
In which combination of resistors will the (i) potential difference across X and Y and (ii) current through X and Y, be the same