In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field (a) magnetic flux is zero and induced e.m.f. is maximum. (b) magnetic flux is maximum and induced e.m.f. is zero. (c) both magnetic flux and induced e.m.f. are maximum. (d) both magnetic flux and induced e.m.f. are zero.

Answer: (b). Plane of coil perpendicular to B means θ = 0 between B and the area vector. φ = NBAcos 0 = maximum. e = NBAωsin 0 = 0 So the answer is (b) flux maximum, emf zero.

In an a. c. generator, when the plane of the coil is perpendicular to… | MHT CET 2024 (3 May, Shift 1)

Q12MHT CET 2024 · 3 MAY · SHIFT 1Easy

Rotating Conductors & AC Generator

In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field

Show answer and solution

Answer: (b)

Plane of coil perpendicular to $\vec{B}$ means $\theta = 0$ between $\vec{B}$ and the area vector.
$\phi = NBA\cos 0 =$ maximum.
$e = NBA\omega\sin 0 = 0$
So the answer is (b) flux maximum, emf zero.

Report a mistake

More questions on Rotating Conductors & AC Generator

A rod of length 60 cm rotates with a uniform angular velocity 20 rad s⁻¹ about its…JEE Main 2024 (4 Apr, Shift 2)
A bicycle wheel of radius ' R ' has ' n ' spokes. It is rotating at the rate of ' F '…MHT CET 2024 (2 May, Shift 1)
A circular coil of resistance ' R ', area ' A ', number of turns ' N ' is rotated about…MHT CET 2024 (16 May, Shift 2)
A circular coil of resistance R, area A, number of turns ' N ' is rotated about its…MHT CET 2024 (4 May, Shift 1)
A coil of 200 turns and area 0.20 m² is rotated at half a revolution per second and is…JEE Main 2024 (1 Feb, Shift 2)
A ceiling fan having 3 blades of length 80 cm each is rotating with an angular velocity…JEE Main 2024 (30 Jan, Shift 1)
A metallic rod of length 'L' is rotated with an angular speed of ' ω ' normal to a…JEE Main 2023 (24 Jan, Shift 2)
A 20 cm long metallic rod is rotated with 210 rpm about an axis normal to the rod passing…JEE Main 2023 (15 Apr, Shift 1)

Rotating Conductors & AC Generator question from MHT CET 2024 (3 May, Shift 1)

More questions on Rotating Conductors & AC Generator