In a coil of resistance $10 \Omega$, the induced current developed by changing magnetic flux through

Question

In a coil of resistance $10 \Omega$, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in weber is\

Professor PC Thomas Classes · Answer

(b) : $q=$ Area under $i$ - $t$ graph $=\frac{1}{2} 	imes 4 	imes 0.1=0.2 \mathrm{C}$ As $q=\frac{\Delta \phi}{R} \quad 	herefore \quad \Delta \phi=q R=(0.2 \mathrm{C})(10 \Omega)=2$ weber\