Question
The reason for attractive force between two parallel wires in which current is flowing in same direction is:

Answer

(d)magnetic force between them

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

How many electrons will there be in one coulomb of charge?
A ray of light travelling inside a rectangular glass block of refractive index $\sqrt{2}$ is incident on the glass$–$air surface at an angle of incidence of $45^\circ $. The refractive index of air is $1.$ Under these conditions the ray
Assertion : The resistivity of a semiconductor increases with temperature.
Reason     : The atoms of a semiconductor vibrate with larger amplitude at higher temperature there by increasing it's resistivity.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 
p-n junction diode acts as:
Which of the following statements is not correct according to Rutherford model ?
A wave can transmit ...... from one place to another(a) Energy(b) Amplitude(c) Wavelength(d) Matter
       
The correct relation is $($Where $B_H=$ Horizontal component of earth's magnetic field $;\mathrm{B}_{\mathrm{V}} =$ Vertical component of earth's magnetic field and $\mathrm{B}=$ Total intensity of earth's magnetic field$)$
An air capacitor is connected to a battery. The effect of filling the space between the plates with a dielectric is to increase(a) The charge and the potential difference(b) The potential difference and the electric field(c) The electric field and the capacitance(d) The charge and the capacitance
   
   
What happens when a glass rod is rubbed with silk?
Vapour is injected at a uniform rate in a closed veseel which was initially evacuated. The pressure in the vessel:
  1. Increaaes continuously.
  2. Decreases continuously.
  3. First increases and then decreases.
  4. First increases and then becomes constant.