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Quite often, connecting wires carrying c...

Quite often, connecting wires carrying currents in opposite directions are twisted together in using electrical appliances. Explain how it avoids unwanted magnetic fields.

A

Electricla effect

B

Magnetic effect

C

Seebeck effect

D

Peltier effect

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-MOVING CHARGE AND MAGNESIUM-ASSIGNMENT (SECTION A)
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  2. Figure shown a current loop two circular arcs jioned by two radial lin...

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  3. Which of the following graphs represent variation of magnetic field B ...

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  4. Two straight long conductors AOB and COD are perpendicular to each oth...

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  5. The current I ampere is flowing in an equilateral triangle of side a t...

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  6. A square frame of side l carries a current I and produces a magnetic f...

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  7. The magnetic induction at the point O, if the wire carries a current I...

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  8. The magnetic field intensity at the point O of a loop with current I, ...

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  9. If an electron revolves around a nucleus in a circular orbit of radius...

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  10. A thin disc of radius R has charge Q distributed uniformly on its surf...

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  11. The number of turns per unit length of a solenoid is 10. If its averag...

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  12. In a toroid the number of tuns per unit length is 1000 and current thr...

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  13. A circular loop of radius R carrying a current I is placed in a unifor...

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  14. A circular loop of radius R is kept in a uniform magnetic field pointi...

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  15. Two long wires, carrying currents i1 and i2, are placed perpendicular...

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  16. Quite often, connecting wires carrying currents in opposite directions...

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  17. A rectanguar doop carrying a current I is situated near a long straigh...

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  18. A square loop of side l iskept in a uniform magnetic field B such that...

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  19. Choose the correct statement

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  20. The current sensitivity of a moving coil galvanometer increases by 20%...

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