MCQ
Two different loops are concentric and lie in the same plane. The current in the outer loop is clockwise and increasing with time. The induced current in the inner loop then, is
  • A
    Clockwise
  • B
    Zero
  • Counter clockwise
  • D
    In a direction that depends on the ratio of the loop radii

Answer

Correct option: C.
Counter clockwise
c
(c)The induced current will be in such a direction so that it opposes the change due to which it is produced.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Four resistances $40 \ \Omega, 60\  \Omega, 90\  \Omega$ and $110\  \Omega$ make the arms of a quadrilateral $A,B,C,D$. Across $AC$ is a battery of emf $40\, V$ and internal resistance negligible. The potential difference across $BD$ is $V$ is...... 
A uniform conducting wire of length is $24 {a}$, and resistance ${R}$ is wound up as a current carrying coil in the shape of an equilateral triangle of side $'a'$ and then in the form of a square of side $'a'.$ The coil is connected to a voltage source ${V}_{0}$. The ratio of magnetic moment of the coils in case of equilateral triangle to that for square is $1: \sqrt{y}$ where $y$ is ..... .
A circular coil of radius $4\, cm$ and of $20$ $turns$ carries a current of $3$ amperes. It is placed in a magnetic field of intensity of $0.5$ $weber/{m^2}$. The magnetic dipole moment of the coil is.......$ampere - {m^2}$
A conducting square frame of side $'a'$ and a long straight wire carrying current $I$ are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity $'V'.$ The $emf$ induced in the frame will be proportional to
A step up transformer has turn ratio $10 :1$ . A cell of $e.m.f.\, 5 \,volts$ is fed to the primary. Secondary voltage developed is......$V$
In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is
An inductor $(L = 0.03\;H)$ and a resistor $(R = 0.15 k\Omega )$ are connected in series to a battery of $15\;V$ $EMF$ in a circuit shown below. The key $K_1$ has been kept closed for a long time. Then at $t = 0$, $K_1$ is opened and key $K_2$ is closed simultaneously. At $t = 1 \;ms$, the current in the circuit will be ........... $mA$. (${e^5} \cong 150)$
If the work function for a certain metal is $3.2\times 10^{-19}$  joule and it is illuminated with light of frequency $8\times 10^{14}$  Hz. The maximum kinetic energy of the photo-electrons would be ($\mathrm{h} = 6.63\times 10^{-34}\mathrm{Js})$
Current in a circuit falls from $5.0\, A$ to $0.0\, A$ in $0.1\, s$. If an average $emf$ of $200\, V$ induced, give an estimate of the self-inductance of the circuit....$H$
Two solenoids have identical geometrical construction and same number of truns but  one is made of thick wire and other of thin wire. Which of the following quantities are  different for two solenoids :- 
$(a)$ Self inductance.
$(b)$ Rate of joule heating if the same current goes through them.
$(c)$ Magnetic potential energy if the same current goes through them .
$(d)$ Time constant.