The frequency of alternating current in households in India is MCQ with Answer and Explanation

Explanation:
Q = m c ΔT => c = Q/(m ΔT), unit J/(kg °C).

Explanation:
Wavelength is distance between successive compressions or rarefactions.

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.