Home
Class 12
PHYSICS
The coil in a MCG has an area of 4cm^(2)...

The coil in a MCG has an area of `4cm^(2)` and `500` turns. The intensity of magnetic induction is `2T`. When a current of `10^(-4)A` is passes through it, the deflection is `20^(@)`. The couple per unit twist is `(N-m)`

A

`3 xx 10^(-6) `

B

`2 xx 10^(-6) `

C

`4 xx 10^(-6) `

D

`5 xx 10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
B
`tau theta = BAIN`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 1(H.W) (CONVERSION OF MCG INTO AMMETER AND VOLTMETER)|9 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 2(C.W) (AMPERE.S CIRCUITAL LAW BIO-SAVART LAW AND ITS APPLICATIONS)|19 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 1(H.W) (TORQUE ON CURRENT LOOP)|3 Videos

  • MAGNETISM AND MATTER

    NARAYNA|Exercise EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)|17 Videos

  • NUCLEAR PHYSICS

    NARAYNA|Exercise LEVEL-II-(H.W)|9 Videos

Similar Questions

Explore conceptually related problems

The area of the coil in a moving coil galvanometer is 16 cm^2 and has 20 turns. The magnetic induction is 0.2T and the couple per unit twist of the suspended wire is 10^(-6) Nm per degree. If the deflection is 45^@ calculate the current passing through it

A Rectangular coil of 10 turns, each of area 0.05 m^(2) , is suspended freely in a uniform magnetic field of induction 0.01 T. A current of 30 µA is passed through it. (i) What is the magnetic moment of the coil (ii) What is the maximum torque experienced by the coil?

Knowledge Check

  • The area of the coil in a moving coil galvanometer is 15cm^(2) and has 20 turns. The magnetic induction is 0.2T and the couple per unit twist of the suspended wire is 10^(-6) Nm per degree. If the deflection is 45^(@) , the current passing through it is

    A
    `75xx10^(-4)A`
    B
    `7.5xx10^(-4)A`
    C
    `0.75xx10^(-4)A`
    D
    `750xx10^(-4)A`

  • The self inductance of a coil having 100 turns is 10 mH. What is the magnetic flux linked with each turn of the coil, if a current of 4 mA is passed through the coil?

    A
    `4 xx 10^(-7)` weber
    B
    `2 xx 10^(-7)` weber
    C
    `1 xx 10^(-7)` weber
    D
    `8 xx 10^(-7)` weber

  • A TG has 50 turns each of diameter 15 cms . When a certain current is passed through its coil, the deflection of the needle is 45^(@) . If B_H)=4 pi muT the value of current is

    A
    `77.44mA`
    B
    `44.77mA`
    C
    `74.74mA`
    D
    `60 mA`

    • Similar Questions

    Explore conceptually related problems

    A magnetic needle is arranged at the centre of a current carrying coil having 50 turns with radius of coil 20 cm arranged along magnetic meridian. When a current of 0.5mA is allowed to pass through the coil the deflection is observed to be 30^(@) . Find the horizontal component of earth's magnetic field

    A rectangular coil of wire of area 400cm^(2) contain 500 turns. It is places in a magnetic field of induction 4xx10^(-3)T and it makes an angle 60^(@) with the field. A current of 0.2A is passed through is. The torque on the coil is

    The coil of a moving coil galvanometer has 1000 turns each of area 3 xx 10^(-4)m^(2) . Its suspension fibre has restoring torque of 2 xx 10^(-4)N-m per degree and the radial magnetic field of induction 0.08 Wb/m. If a current of 10 µA is passed through it, then the deflection produced is

    A rectangular coil has 100 turns has length 5 cm and breadth 2 cm. It is suspended in radial magnetic field of induction 0.1 Wb//m^(2) . If a current of 100 muA is passed through the coil, then the torque acting on the coil is

    The coil of area 0.1 m^(2) has 500 turns. After placing the coil in a magnetic field of strength 4 xx 10^(-4) Wb//m^(2) , if rotated through 90^(@) in 0.1 s, the average emf induced in the coil is

    Home
    Profile