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The magnitude of the magnetic field insi...

The magnitude of the magnetic field inside a long solenoid is increased by

A

a. decreasing its radius

B

b. decreasing the current through it

C

c. increasing its area of cross section

D

d. introducing a medium of higher permeability

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introducing a medium of higher permeability
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NEW JOYTHI PUBLICATION-MOVING CHARGES AND MAGNETISM-COMPETITIVE EXAM CORNER
  1. Ampere's circuits law can be derived from

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  2. The shunt resistance required to allow 4% of the main current through ...

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  3. The magnetic flux linked with a coil of N turns of area of cross secti...

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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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  13. When a magnetic field is applied on a stationary electron, it

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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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  16. A proton is traveling along the X - direction with velocity 5 xx 10^6 ...

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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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