A coil of 500 turns and mean radius 10 cm makes 3000 rotations per minute about one of its diameter in a uniform magnetic field of induction `4xx10^(-

Question

A coil of 500 turns and mean radius 10 cm makes 3000 rotations per minute about one of its diameter in a uniform magnetic field of induction `4xx10^(-

A coil of 500 turns and mean radius 10 cm makes 3000 rotations per minute about one of its diameter in a uniform magnetic field of induction `4xx10^(-2)Wb//m^(2)` perpendicular to its axis of rotation. The rms current through the coil if its resistance is 100 `Omega`, is
A. 4.1A
B. 1.4A
C. 4.4A
D. 1.1A

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

A coil of area 500 `cm^(2)` having 1000 turns is put perpendicular to a magnetic field of intensity `4xx10^(-5)`T. if it is rotated by `180^(@)` in 0.

2 Answers 4 Views

A current of 3A, in one coil, causes a flux in the second coil of 2000 turns to change by `6xx10^(-4)Wb` per turns of the secondary coil. The mutual i

2 Answers 7 Views

A coil of 50 turns, each of area 0.12 `m^(2)` is rotated at a constant speed of 600 revolutioins per minute in a uniform magnetic field of induction 0

2 Answers 4 Views

A coil of copper having `1000` turns is placed in a magnetic field `B=4xx10^(-3)T` perpendicular to its plane. The cross-sectional area of the coil is

2 Answers 4 Views

A coil having 50 turns and an area of `800 cm^(2)` is held with its plane perpendicular to uniform magnetic field of induction `5xx10^(-5)Wb//m^(2)`.

2 Answers 4 Views

A coil having an area of 0.4 `m^(2)` and 100 turns is kept perpendicular to a uniform magnetic field of induction of 0.5 `Wb//m^(2)`. The coil is rota

2 Answers 4 Views

A coil of 1000 turns each of area `1.2m^(2)` is rotating about an axis in its plane and perpendicular to uniform magnetic field of induction `2xx10^(-

2 Answers 4 Views

A circular coil of 50 turns an diameter 24 cm is rotated continuously in a uniform magnetic field of induction `3.6xx10^(-4)`T so as to cut the lines

2 Answers 4 Views

A coil having effective area A, is held with its plane normal to a magnetic field of induction B. The magnetic induction is quickly reduced to `25%` o

2 Answers 4 Views

A circular coil of 25 turns and radius of 12 cm is placed in a uniform magnetic field of 0.5 T normal to the plane of coil. If the current in the coil

2 Answers 4 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`e_(0)=nAB2pif`
`I_(rms)=(e_(rms))/(R)`
`=(e_(0))/(Rsqrt(2))=(nAB2pif)/(Rsqrt(2))`
`=(500xx3.14xx10^(-2)xx4xx10^(-2)xx2xx3.14xx50)/(100xx1.414)`
`=1.4A`

4 views Answered 2023-02-05 15:29