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A magnetic compass shows a deflection wh...

A magnetic compass shows a deflection when placed near a current-carrying wire. How does the deflection of the compass get affected, if the current in the wire is increased ? Support your answer with a reason.

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If the current in the wire is increased, the deflection increases. This is so as the magnetic field is directly proportional to the magnitude of current passing through the straight conductor. This causes the compass needle to deflect more.
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ZEN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT -Additional question section (Short answer [SA] type 1 questions)
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  2. It is established that an electric current through a conductor produce...

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  6. How can the speed of rotation of the armature coil of an electric moto...

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  7. Draw the diagram of a simple electric motor. Label the following parts...

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  8. In what way can the magnitude of an induced current be increased ?

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  9. State the factors on which the induced emf in a coil rotating in a uni...

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  10. If the speed of rotation of the armature of a generator is doubled, ho...

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  11. For the current-carrying solenoid shown, draw the magnetic field lines...

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  12. What kind of energy transformation takes place in an electric motor ? ...

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  13. What is the role of fuse used in series with any electrical appliance ...

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  14. Whay is the earth pin longer and thicker than live and neutral pins ...

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  15. Name the three types of wires used in domestic circuits and mention t...

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  16. Give two uses of a magnetic compass.

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  17. A freely suspended magnet always points along north-south direction. W...

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  18. What are magnetic field lines ? How is the direction of a magnetic fie...

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  19. What is the direction of magnetic field lines inside a bar magnet and ...

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  20. What does the degree of closeness of the field lines represent ?

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