In a moving coil galvanometer, the magnetic field used is 5T. The coil has 100 turns, each of mean area `10 xx 10^(-4)` m^(2). If a current of `10^(-7

In a moving coil galvanometer, the magnetic field used is 5T. The coil has 100 turns, each of mean area `10 xx 10^(-4)` m^(2). If a current of `10^(-7)` A produces a deflection of 1 mm on a scale 1m away, calcualte the current reduction factor of the galvanometer and the torsional rigidity of the suspension wire.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - `2xx10^(-4)` A perradian, `10^(-4)` Nm per radina

5 views Answered 2023-02-05 15:29

Related Questions

Prove that `^100 C_2^(100)C_2+^(100)C_2^(100)C_4+^(100)C_4^(100)C_6++^(100)C_(98)^(100)C_(100)=1/2[^(200)C_(98)-^(100)C_(49)]dot`

2 Answers 5 Views

An insulated wire is wound so that it forms a flat coil with N=100 turns. The radius of the innermost turns is `R_(1)=4 cm` . What magnetic moment wil

2 Answers 4 Views

A moving coild galvanometer with a lamp-and-scale arrangement has a coil of 50 turns of mean area 1.5 `cm^(2)` per turn and the effective strength of

2 Answers 5 Views

A tangent galvanometer has two circular coils having turns in the ratio 1:10 . When the coil with smaller number of turns is used,a current of 0.5A pr

2 Answers 4 Views

A field of 0.2 tesla acts acts at right angles to a coil of area `100 cm ^(2)m` with 50 turns. The coil is removed from the field in 0.1s . Find the e

2 Answers 5 Views

A circular coil `P` of `100` turns and radius `2cm` is placed coaxially at the center of another circular coil `Q` of `100` turns and radius `20cm` .

2 Answers 9 Views

A transformer has 200 turns in primary coil and 600 turns in secondary coil. If a 220 V DC is applied across primary coil what will be the voltage acr

2 Answers 5 Views

A coil having 100 turns and area `0.020m^(2)` is placed normally in a magnetic field. The magnetic field changes from `0.20 Wb m^(-2)` at a uniform ra

2 Answers 8 Views

A coil has 1000 turns and `500 cm^(2)` as its area. It is placed at right angles to a magnetic field of `2xx10^(-5) Wb m^(-2)`. The coil is rotated th

2 Answers 4 Views

A galvanometer with a coil of resistance `10.0Omega` shows full scale deflection for a current of 50mA. How will you convert the galvanometer into (i)

2 Answers 4 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)