A 30 cm long solenoid has 10 turns per cm and area of \(5c{m}^{2}\). The current through the solenoid coil varies from 2A to 4A in 3.14 s. The e.m.f. induced in the coil is \(\alpha \times {10}^{-5}V\). The value \(\alpha\) is ___________.

[JEE Main 2026, 8 Apr (Shift 2)]

Question

A 30 cm long solenoid has 10 turns per cm and area of \(5c{m}^{2}\). The current through the solenoid coil varies from 2A to 4A in 3.14 s. The e.m.f. induced in the coil is \(\alpha \times {10}^{-5}V\). The value \(\alpha\) is ___________.

[JEE Main 2026, 8 Apr (Shift 2)]

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