Question
If a current is passed through a spring then the spring will:
✓
Answer
- Compress.
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
The nature of binding for a crystal with alternate and evenly spaced positive and negative ions is(a) Covalent(b) Metallic(c) Dipolar(d) Ionic
Three capacitors of capacitance $6~\mu F$ are available. The minimum and maximum capacitance obtained are :
→Which of the following relations is correct ?
The material of permanent magnet has(a) High retentivity, low coercivity(b) Low retentivity, high coercivity(c) Low retentivity, low coercivity(d) High retentivity, high coercivity
Which of the following sometimes requires initiation from a neutron?
At absolute zero temperature a crystal of pure germanium behaves as :
It is not convenient to use a spherical Gaussian surface to find the electric field due to an electric dipole using Gauss’s theorem because(a) Gauss’s law fails in this case(b) This problem does not have spherical symmetry(c) Coulomb’s law is more fundamental than Gauss’s law(d) Spherical Gaussian surface will alter the dipole moment
Which of the following phenomena taken place when a monochromatic light is incident on a prism ?
A point source of light is placed at a distance, of 2f from a converging lens of focal length f. The intensity on the other side of the lens is maximum at a distance:
A small coil $C$ with $N = 200$ turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in figure. The cross sectional area of coil is $A= 1.0 \ cm^2,$ length of arm $OA$ of the balance beam is $l = 30 \ cm$. When there is no current in the coil the balance is in equilibrium. On passing a current $I = 22\ mA$ through the coil the equilibrium is restored by putting the additional counter weight of mass $\triangle m = 60\ mg$ on the balance pan. Find the magnetic induction at the spot where coil is located.
→