In a coil of resistance 10 Ω, 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

Question

In a coil of resistance 10 Ω, 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 (A) 8 (B) 2 (C) 6 (D) 4

Tardigrade Admin · Accepted Answer

q = Area under i-t graph =(1/2) × 4 × 0.1=0.2 C As q=(Δ φ/R) ∴ Δ φ=q R=(0.2 C)(10 Ω)=2 weber

Q. In a coil of resistance $10 Ω$ , 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

8

2

6

4

$q =$ Area under $i - t$ graph
$= \frac{1}{2} \times 4 \times 0.1 = 0.2 C$
As $q = \frac{Δ ϕ}{R}$
$∴ Δ ϕ = qR = (0.2 C) (10Ω) = 2$ weber

Q. In a coil of resistance 10Ω, 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

8

2

6

4

q= Area under i−t graph =21​×4×0.1=0.2C As q=RΔϕ​ ∴Δϕ=qR=(0.2C)(10Ω)=2 weber

Q. In a coil of resistance $10 Ω$ , 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

$q =$ Area under $i - t$ graph
$= \frac{1}{2} \times 4 \times 0.1 = 0.2 C$
As $q = \frac{Δ ϕ}{R}$
$∴ Δ ϕ = qR = (0.2 C) (10Ω) = 2$ weber