Question
Which among the following is true?
✓
Answer
According to Kirchhoff’s first law, the current flowing towards the junction is equal to the current leaving the junction. Mathematically, this law can be expressed as $∑^n_{K – 1} I_K = 0 ($where n is the number of branches carrying current towards or away from the junction$)$
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 resistance of a metal wire increases with increasing temperature on account of:
An electric dipole will experience a net force when it is placed in.
A magnet freely suspended in a vibration magnetometer makes $10$ oscillations per minute at a place $A$ and $20$ oscillations per minute at a place $B$. If the horizontal component of earth’s magnetic field at $A$ is $36 \times 10^{-6}T$ , then its value at $B$ is
→One proton beam enters a magnetic field of $10^{-4} T$ normally, Specific charge $= 10^{11} \mathrm{C} / \mathrm{kg}.$ velocity $ =10^7 \mathrm{~m} / \mathrm{s}.$ What is the radius of the circle described by it
→The velocity of light is maximum is :
Which of the following are in the ascending order of wavelength?
The thermal conductivity of a rod depends on:
- Length.
- Mass.
- Area of cross section.
- Material of the rod.
A proton accelerated by a potential difference $500 \ KV$ moves though a transverse magnetic field of $0.51T$ as shown in figure. The angle $0$ through which the proton deviates from the initial direction of its motion is
→A 100 watt bulb working on 200 volt and a 200 watt bulb working on 100 volt have(a) Resistances in the ratio of 4 : 1(b) Maximum current ratings in the ratio of 1 : 4 (c) Resistances in the ratio of 2 : 1(d) Maximum current ratings in the ratio of 1 : 2
A charged particle moves in a uniform magnetic field. The velocity of the particle at some instant makes an acute angle with the magnetic field. The path of the particle will be: