Electric fuse is a SAFETY device that:
AIncreases the circuit current
BReduces power consumption
CMelts and breaks overload
DBoosts the supply voltage
Answer & Solution
Correct answer: C. Melts and breaks overload
1. A fuse is a thin wire with a low melting point connected in series with the appliance.
2. If current exceeds the rated value, Joule heating MELTS the fuse wire and BREAKS the circuit.
3. Prevents fire, overheating, and damage to costlier components.
_Source: NCERT Class 10 Science Ch 11 §11.6.3 Fuse and Safety Measures_
Related questions
If the resistance of a component is kept constant and the voltage across it is doubled, thDomestic electrical appliances are connected in parallel rather than in series mainly becaThe commercial unit of electrical energy, '1 unit', isA potential difference of 12 V is applied across a $4\ \Omega$ resistor. The current throuJoule's law of heating states that the heat produced in a resistor isThe electric power dissipated in a resistor can be written asTwo resistors, each of resistance $R$, are connected in parallel. Their equivalent resistaFor resistors in parallel, the reciprocal of the equivalent resistance equals