A coil of copper having $$1O0O$$ turns is placed in a magnetic field (B$$ $$=$$ $$4x$$ $$10-3$$ $$T) perpendicular to its axis. The $$cross-sectional$$ area of the coil is $$0.05$$ $$m2$$. If it turns through $$180o$$ in $$0.01$$ $$sec$$, then the e.m.f. induced in the coil is

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Infinity Learn · Accepted Answer

The magnetic flux ϕ$$1$$ passing through a coil when it is placed perpendicular to magnetic field B isΦ$$=nBAWhen$$ the coil is rotated through $$90o$$Φ$$2=$$−nBA∴ΔΦ$$=$$Φ$$2$$−Φ$$1=$$−nBA−$$nBA=$$−$$2nBA$$ Now $$e=$$−ΔΦΔ$$t=+2nBA$$Δ$$t=2$$×$$1000$$×$$4$$×$$10$$−$$3$$×$$0$$⋅$$050$$⋅$$01=40V$$

A coil of copper having 1O0O turns is placed in a magnetic field (B = 4x 10^-3 T) perpendicular to its axis. The cross-sectional area of the coil is 0.05 m². If it turns through 180^o in 0.01 sec, then the e.m.f. induced in the coil is

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A coil of copper having 1O0O turns is placed in a magnetic field (B = 4x 10-3 T) perpendicular to its axis. The cross-sectional area of the coil is 0.05 m2. If it turns through 180o in 0.01 sec, then the e.m.f. induced in the coil is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A coil of copper having 1O0O turns is placed in a magnetic field (B = 4x 10^-3 T) perpendicular to its axis. The cross-sectional area of the coil is 0.05 m². If it turns through 180^o in 0.01 sec, then the e.m.f. induced in the coil is