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Electromagnets are made of soft iron, be...

Electromagnets are made of soft iron, because soft iron has

A

high retentivity and high coercivity

B

low retentivity and low coercivity

C

low retentivity and high coercivity

D

high retentivity and low coercivity

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
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  3. Electromagnets are made of soft iron, because soft iron has

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  4. For protecting a sensitive equipment form external magnetic field, it ...

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  5. Using mass (M), length (L) time (T) and current (A) as fundamental qua...

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  6. A length of wire carries a steady current. It is first bent to form a ...

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  7. Magnetic field B on the axis of a circular coil and far away distance ...

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  8. A long straight wire of radius a carries a steady current I. the curre...

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  9. Which of the following conclusions can eb drawn from the result oint v...

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  10. An electron is travelling along the X-direction. It encounters a magne...

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  11. A charged particle enters a magnetic field H with its initial velocity...

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  12. A proton and an alpha particle of the same velocity enter in turn a re...

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  13. An electron (with charge 1. 6 xx 10 ^(-19) C) moving at right angles t...

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  14. In a mass spectrometer used for measuring the masses of ions, the ions...

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  15. A prot is about 1,840 time heavier than an electron. When it is accele...

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  16. A cyclotron is used to accelerate

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  17. The cyclotron frequency of an electron gyrating in a magneti fied of 1...

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  18. Two parallel beams fo positions moving in the same direction will

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  19. A Galvanometer can be changed into ammeter by providing

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  20. A galvanometer has a resistnace of 100 ohm. A difference of potential ...

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