A carbon resistor has colour strips as violet, yellow brown and golden. The resistance is .............. $\Omega$
Medium
Download our app for free and get started
Using standard colour codes
Violet $= 7$, yellow $= 4$, brown $= 1$ and gold $= 5\,\ %$ (tolerance)
So $R = 74 \times {10^1} \,\pm 5\% $ $ = 740\, \pm 5\% $
So its value will be nearest to $741\,\Omega $.
Download our appand 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.*
Similar Questions
- 1A wire of length $10 \mathrm{~cm}$ and radius $\sqrt{7} \times 10^{-4} \mathrm{~m}$ connected across the right gap of a meter bridge. When a resistance of $4.5 \ \Omega$ is connected on the left gap by using a resistance box, the balance length is found to be at $60 \mathrm{~cm}$ from the left end. If the resistivity of the wire is $\mathrm{R} \times 10^{-7} \Omega \mathrm{m}$, then value of $\mathrm{R}$ is :View Solution
- 2Potential difference between the points $P$ and $Q$ in the electric circuit shown is ................. $V$View Solution
- 3The circuit shown has been connected for a long time. The voltage across the capacitor is ............. $V$View Solution
- 4Consider the ladder network shown in figure. What should be the value of resistance $R$, so that effective resistance between $A$ and $B$ becomes independent of number of elements in the combination is ............. $\Omega$View Solution
- 5View SolutionSee the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?
- 6Three identical resistances $A$, $B$ and $C$ are connected as shown in the given figure. The heat produced will be maximumView Solution
- 7Coefficient of linear expansion of material of resistor is $\alpha$. Its temperature coefficient of resistivity and resistance are $\alpha_\rho$ and $\alpha_R$ respectively, then correct relation isView Solution
- 8A cell of negligible resistance and $e.m.f.$ $2$ $volts$ is connected to series combination of $2$, $3$ and $5\, ohm$. The potential difference in volts between the terminals of $3\, ohm$ resistance will beView Solution
- 9The four arms of a Wheatstone bridge have resistances as shown in the figure. A galvanometer of $15\, \Omega$ resistance is connected across $BD$. Calculate the current through the galvanometer when a potential difference of $10\, V$ is maintained across $AC.$View Solution
- 10The potential gradient along the length of a uniform wire is $10\,volt/metre$. $B$ and $C$ are the two points at $30\,cm$ and $60\,cm$ point on a meter scale fitted along the wire. The potential difference between $B$ and $C$ will be ............. $volt$View Solution