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An electric current is always accompaine...

An electric current is always accompained by a magnetic field', was discovered by

A

Oersted

B

Maxwell

C

Faraday

D

Ohm

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The correct Answer is:
A
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MCGROW HILL PUBLICATION-HEATING AND MAGNETIC EFFECTS OF CURRENT -HIGHER ORDER THINKING QUESTIONS
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  5. An electric fan and a heater are marked as 100 watt , 220 volt and 100...

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  6. If a 2 kW boiler is used everyday for 1 hour, then electrical energy c...

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  7. Appliances based on heating effect of current work on

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  8. Heat developed in an electric wire of resistance Rohm by current / amp...

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  9. If R(1) and R(2) are respectively the filament resistances of a 200 wa...

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  10. Two electric bulbs A and B are disigned for the same voltage. Their po...

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  11. Five equal risistors when connected in series dissipted 5 W power. If ...

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  12. Two heaters, eacch maked 1000 W, 250 V are connected in series with a ...

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  13. Two bulbs, one of 50 watt and another of 25 watt are connected in seri...

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  14. 1 joule equals

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  15. You have the following appliances each of 500 W running 220 V ac. (i...

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  16. An electric lamp is marked 60 W, 240 V. If it operats at 200, V the cu...

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  17. Which of the following can be used to express energy ?The symbols used...

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  18. Two metallic wires of the same material and same length have different...

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  19. In the above question 73, when the wires are connected in parallel, th...

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  20. Two equal resistances are connected in seires across a battery and con...

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  21. Heat produced in a wire of resistance R due to current flowing at cons...

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