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The ratio of the magnetic fields produce...

The ratio of the magnetic fields produced at the centre of a solenoid for a flow of current 1 A to that produced inside toroid for the flow of current 2A both having same number of turns per unit lenght is

A

a. `1:1`

B

b. `1:2`

C

c. `2:1`

D

d. `1:4`

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NEW JOYTHI PUBLICATION-MOVING CHARGES AND MAGNETISM-COMPETITIVE EXAM CORNER
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  4. Biot-Savart law can be expressed alternatively as

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  5. The magnetic field at a point midway between two parallel long wires c...

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  6. A 100 turns coil of area of cross section 200 cm^(2) having 2Omega res...

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  7. Two charged particles have charges and masses in the ration 2:3 and 1:...

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  8. A metal rod of length l cuts across a unifrom magnetic field B with a ...

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  9. The magnitude of the magnetic field inside a long solenoid is increase...

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  10. If the radius of the dees of cyclotron is r, then the kinetic energy o...

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  11. A toroid having 200 tuns carries a current of 1 A. The average radius ...

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  12. The deflection in a moving coil galvanometer is

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  14. A single turn cirular coil is connected to a cell as shown. Magnetic f...

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  15. Identify the wrong statement

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  17. The shunt required to send 10 % of the main current through a moving c...

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  18. Two idential coil of 5 turns each carry 1 A and 2 A current respective...

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  19. The ratio of the magnetic fields produced at the centre of a solenoid ...

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  20. Two long parallel wires carrying equal currents which are 8 cm apart p...

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