MCQ
The direction of induced current in the loop abc is:
- Aalong abc if I is constan
- Balong abc if I increases
- Calong abc if I decreases
- Dalong acb if I increases
✓
Answer
(b) along abc if I increases
Explanation: In accordance with Lenz law.
Explanation: In accordance with Lenz law.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A uniform conducting wire $ABC$ has a mass of $10\,g$. A current of $2\,A$ flows through it. The wire is kept in a uniform magnetic field $B = 2T.$ The acceleration of the wire will be
→The electrical circuits used to get smooth $d.c$. output from a rectifier circuit is called
→In a radioactive substance at t = 0, the number of atoms is $8 \times 10^4$. Its half life period is 3 years. The number of atoms $1 \times 10^4$ will remain after interva
→The resistances in the two arms of the meter bridge are $5 \,\Omega$ and $R \,\Omega$ respectively. When the resistance $R$ is shunted with an equal resistance, the new balance point is at $1.6\,l_1$. The resistance $R$ is .................. $\Omega$
→In the figure, given that $V_{BB}$ supply can vary from $0$ to $5.0 \,V,\,\,V_{CC} = 5\,V,$ $\beta _{dc} = 200,\,\,R_B = 100,\,k\Omega ,$ $R_C = 1\,k\Omega $ an $V_{BE} = 1.0\,V,$ The minimum base current and the input voltage at which the transistor will go to saturation, will be respectively
→A molecule with a dipole moment $p$ is placed in an electric field of strength $E$. Initially the dipole is aligned parallel to the field. If the dipole is to be rotated to be anti-parallel to the field, the work required to be done by an external agent is
→The part of a transistor which is heavily doped to produce a large number of majority carriers, is
A charge $+q$ is situated at a distance $d$ away from both the sides of a grounded conducting $L$ shaped sheet as shown in the figure.The force acting on the charge $+q$ is
→The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated $100\, W, 220\, V$ is connected across $220\, V$ power supply. If the voltage drops by $10\%$ then the power of lamp will be
→If λ =10Å, then it corresponds to