In a coil of resistance 100 Ω , a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is:

Question

In a coil of resistance 100 Ω , a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is:, 275 Wb, 200 Wb, 225 Wb, 250 Wb

MARKS App · Accepted Answer

E m f = i R ⇒ - d ϕ d t = i R ∫ - d ϕ = ∫ ( i d t ) R q = Δ ϕ R = Area under i - t graph ⇒ ∆ ϕ = 1 2 × 10 × 0 . 5 × 100 = 250 Wb

Search any question & find its solution

Looking for more such questions to practice?