Physics · 2022
JEE Main · 25 July 2022, Shift 2 · Q60
Magnetic flux (in weber) in a closed circuit of resistance 20 Ω varies with time t (s) as φ=8 t^2-9 t +5. The magnitude of the induced current at t…
Magnetic flux (in weber) in a closed circuit of resistance $\displaystyle 20 \Omega$ varies with time t (s) as $\displaystyle \phi=8 \mathrm{t}^2-9 \mathrm{t}+5$. The magnitude of the induced current at $\displaystyle \mathrm{t}=0.25 \mathrm{~s}$ will be
\_\_\_\_ mA.
Official answer
250
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