MCQ
Two resistors having equal resistances are joined in series and a current is passed through the combination. Neglect any variation in resistance as the temperature changes. In a given time interval
  •  Equal amounts of thermal energy must be produced in the resistors
  • B
    Unequal amounts of thermal energy may be produced
  • C
     The temperature must rise equally in the resistors
  • D
     The temperature must rise unequally in the resistors

Answer

Correct option: A.
 Equal amounts of thermal energy must be produced in the resistors
 Equal amounts of thermal energy must be produced in the resistors

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

A thin uniform rod with negligible mass and length $l$ is attached to the floor by a frictionless hinge at point $P$ . A horizontal spring with force constant $k$ connects the other end to wall. The rod is in a uniform magnetic field $B$ directed into the plane of paper. What is extension in spring in equilibrium when a current $i$ is passed through the rod in direction shown. Assuming spring to be in natural length initially.
A boy of mass M is applying a horizontal force to slide a box of mass M' on a rough horizontal surface. The coefficient of friction between the shoes of the box and the floor is $\mu.$ In which of the following cases it is certainly not possible to slide the box?
If intensity of each wave in the observed interference pattern in Young's double slit experiment is $I_0$. then for some point $P$ where the phase difference is $\phi $ , intensity $I$ will be
A donut-shaped permanent magnet (magnetization parallel to the axis) can slide frictionlessly on a vertical rod. Treat the magnets as  dipoles with mass $m_d$ and dipole moment $M$ . When we put two back to back magnets on the rod the upper one will float. At what height $z$ does it float?
$0.2\,F$ capacitor is charged to $600\,V$ by a battery. On removing the battery, it is connected with another parallel plate condenser of $1\,F$. The potential decreases to.........$volts$
A magnet is suspended in such a way that it oscillates in the horizontal plane. It makes 20 oscillations per minute at a place where dip angle is 30$^\circ$ and 15 oscillations per minute at a place where dip angle is 60$^\circ$. The ratio of total earth's magnetic field at the two places is
The three vessels shown in fisure $(13- Q2)$ have same base area. Equal volumes of a liquid are poured in the three vessels. The force on the base will be :
Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is $5.0 \mathrm{~cm}$. The magnitude of the magnetic field at a point $P$ midway between the wires is __________$\mu \mathrm{T}$ (Given : $\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$ )
The idea of the quantum nature of light has emerged in an attempt to explain
The horizontal component of earth's magnetic field at a certain place is $3 \times 10^{-5}\,T$ and direction of the field is from geographic south to geographic north. A very long straigh conductor is carrying steady current of $1\,A$ then calculate the force per unit length on it if the direction of current is from east to west (In $N/m$ )