A resistance is shown in the figure. Its value and tolerance are given respectively by
A$270\,\Omega ,\,10\% $
B$27\,k\Omega ,\,10\% $
C$27\,k\Omega ,\,20\% $
D$270\,\Omega ,\,5\% $
JEE MAIN 2019, Medium
Download our app for free and get started
B$27\,k\Omega ,\,10\% $
b Color code$:$
Red violet orange silver
$R=27 \times 10^{3} \Omega \pm 10 \%$
$=27 K \Omega \pm 10 \%$
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
The terminal voltage of the battery, whose emf is $10 \mathrm{~V}$ and internal resistance $1 \Omega$, when connected through an external resistance of $4 \Omega$ as shown in the figure is:
A battery of internal resistance $4\, ohm$ is connected to the network of resistance as hown. In the order that the maximum power can be delivered to the network, the value of $R$ in ohm should be :-
The resistance of a conductor at $15^{\circ} {C}$ is $16\, \Omega$ and at $100\, {C}$ is $20\, \Omega$. What will be the temperature coefficient of resistance of the conductor?
The figure shows a tetrahedron, each side of which has a resistance $r$ Choose the correct diagram $(s),$ which show two-dimensional equivalent of the tetrahedron.
In figure shows a rectangular block with dimensions $x,\, 2x$ and $4x$. Electrical contacts can be made to the block between opposite pairs of faces (for example, between the faces labelled $A-A, B-B$ and $C-C$). Between which two faces would the maximum electrical resistance be obtained ($A-A$ : Top and bottom faces, $B-B$ : Left and right faces, $C-C$ : Front and rear faces)
$12$ cells each having same $emf$ are connected in series with some cells wrongly connected. The arrangement is connected in series with an ammeter and two cells which are in series. Current is $3 \,A$ when cells and battery aid each other and is $2\, A$ when cells and battery oppose each other. The number of cells wrongly connected is