Question
State expression for Resistance connected in series.
✓
Answer
$R = r_1 + r_2 + r_3$, resistances in series.
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
On sending an ultrasonic wave from a ship towards the bottom of a sea, the time interval between sending the wave and receiving it back is found to be 1.5 s . If the velocity of wave in sea water is $1400 m s ^{-1}$, find the depth of the sea.
→Does the substance absorb or liberate any heat energy during the change of phase?
A mixture of radioactive substance gives off three types of radiation name the radiation which when becomes neutral, become the atom of rare gas.
Of the three connecting wires in a household circuit: Which two of the three wires are at the same potential? In which of the three wires should the switch be connected?
The voltage applied to a given rheostat is made four times its initial value. By what factor will be resistance of the rheostat change?
Answer the question with respect to the following diagram:
Why is it necessary to cool the tube?
Why is it necessary to cool the tube?
(a) What do you understand by the term nucleons?
(b) Which of the radionctive radiations:
(i) can cause severe genetical disorders,
(ii) are deflected by an electric field?
(b) Which of the radionctive radiations:
(i) can cause severe genetical disorders,
(ii) are deflected by an electric field?
What is a superconductor? Give one example of it.
A wave has a wavelength of $10^{-3} nm$. State its one property different from light.
→In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.