MCQ
A 500 W heating unit is designed to operate from a 115 volt line. If the line voltage drops to 110 volt, the percentage drop in heat output will be
  • A
    10.20%
  • B
    8.1%
  • 8.6%
  • D
    7.6%

Answer

Correct option: C.
8.6%
8.6%

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

For a medium, refractive indices for violet, red and yellow are 1.62, 1.52 and 1.55 respectively, then dispersive power of medium will be
Photon of 5.5 eV energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 4.0 eV. The stopping voltage required for these electrons are
If the strength of the magnetic field produced $10\,cm$ away from a infinitely long straight conductor is ${10^{ - 5}}\,Weber/{m^2}$, the value of the current flowing in the conductor will be........$ampere$
The electric field for a plane electromagnetic wave travelling in the $+y$ direction is  shown.  Consider a point where $\vec E$ is in $+z$ direction. The $\vec B$ field is
Electrical energy $U _0$ is stored in a charged parallel plate capacitor. On increasing the distance between the plates of a capacitor, double to initial distance the electrical energy will be :
A converging lens is used to form an image on a screen. When upper half of the lens is covered by an opaque screen
Using Young's double slit experiment, a monochromatic light of wavelength $5000\,\mathring A$ produces fringes of fringe width $0.5 \,mm$. If another monochromatic light of wavelength $6000\,\mathring A$ is used and the separation between the slits is doubled, then the new fringe width will be ............... $mm$
Magnetic dipole moment of a rectangular loop is:
The following arrangement consists of five identical metal plates parallel to each other. Area of each plate is $A$ and separation between the successive plates is $d$. The capacitance between $P$ and $Q$ is
The value of the basic unit of the charge is: