Home
Class 12
PHYSICS
Two circular, similar, coaxial loops ca...

Two circular, similar, coaxial loops carry equal currents in the same direction. If the loops are brought nearer, what will happen?

A

P increases while in Q decreases

B

Q increases while in P decreases

C

both P and Q increases

D

both P and Q decreases

Text Solution

Verified by Experts

The correct Answer is:
D
When the coils P and Q are brought nearer, the magnetic flux linked with each coil will increase and so the induced current will try to decrease the flux and hence current in both P and Q decreases
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise NEET CAFE TOPICWISE PRATICE QUESTIONS (SELF AND MUTUAL INDUCTANCE)|19 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise NEET CAFE TOPICWISE PRATICE QUESTIONS (INSTANTANEOUS, AVERAGE AND RMS VALUE OF ALTERNATING CURRENT/ VOLTAGE)|5 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise NEET CAFE TOPICWISE PRATICE QUESTIONS (FARADAY.S LAW (INDUCED EMF AND CURRENT)|27 Videos

  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|30 Videos

  • ELECTROMAGNETIC WAVES

    MTG GUIDE|Exercise AIPMT/NEET(MCQs)|15 Videos

Similar Questions

Explore conceptually related problems

Two circular loops lie side by side in the same plane. One is connected to a source that supplies an increasing current, the other is a simple closed ring. Is the induced current in the ring is in the same direction as that in the loop connected to the source or opposite? What if the current in the first loop is decreasing?

A loop of wire having 50 turns carries a current of 10A in anticlockwise direction. If diameter of loop is 10cm , what is the magnitude and direction of magnetic moment of current loop?

Knowledge Check

  • Two similar circular loops carry equal currents in the same direction. On moving the coils further apart, the electric current will

    A
    remain unaltered
    B
    increases in one and decreases in the second
    C
    increase in both
    D
    decrease in both

  • Two identical coaxial circular loops carry a current i each circulating int the same direction. If the loops approch each other the current in

    A
    each decreases
    B
    each increases
    C
    each remain the same
    D
    one increases whereas that in the other decreases

  • A circular loop of radius 0.05 m carries a current of 1.0 A. The magnetic moment of the loop is .

    A
    `1.32xx10^(-4)A-m^(2)`
    B
    `7.85xx10^(-4)A-m^(2)`
    C
    `2.62xx10^(-4)A-m^(2)`
    D
    `5.25xx10^(-4)A-m^(2)`

    • Similar Questions

    Explore conceptually related problems

    Two identical current carrying coaxial loops, carry current I in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as C,

    A current carrying circular coil is bent so as to convert it into a double loop, both the loops being concentric and are carrying current in the same direction. If B is the initial magnetic field at the centre, the final magnetic field at the centre will be

    A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in

    A current - carrying circular coil is bent so as to convert it into a double loop. Both the loops are concentric and are carrying current in the same direction. If initially , B is the magnetic field at the centre of the coil, then finally magnetic field at the centre will be

    In Fig. the conductors carry equal currents i. All straight segments are very long, and the two circular loops have equal radii. However, the currents around the loops have opposite sense. The ratio of the magnetic field at a and b, at the centres of the two loops, is

    Home
    Profile