A wire of resistance 10 Ω is stretched to double its length. Its new resistance is MCQ with Answer and Explanation
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A 10 kg object is falling freely under gravity. The net force acting on it is (g=10)
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The term 'latent heat' was introduced by
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In modern household wiring, a 'fuse' has largely been replaced by which device that performs the same safety function but can be reset?
Correct Answer: Option D
Explanation:
A Miniature Circuit Breaker (MCB) serves the same safety function as a fuse: breaking the circuit during an overload or short circuit. However, unlike a fuse wire that melts and must be physically replaced, an MCB contains an electromechanical mechanism that trips the switch. It can simply be switched back on to restore power.
A Miniature Circuit Breaker (MCB) serves the same safety function as a fuse: breaking the circuit during an overload or short circuit. However, unlike a fuse wire that melts and must be physically replaced, an MCB contains an electromechanical mechanism that trips the switch. It can simply be switched back on to restore power.
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