A bird sitting on a single high tension wire does not get electrocuted because
KVPY 2017, Medium
Download our app for free and get started
(d)
When bird sits over a high tension wire, its both feet are nearly at same potential. So, no current flows through bird's body.
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
- 1The resistance of a wire of iron is $10\, ohms$ and temp. coefficient of resistivity is $5 \times {10^{ - 3}}\,^oC$. At $20\,^oC$ it carries $30$ milliamperes of current. Keeping constant potential difference between its ends, the temperature of the wire is raised to $120\,^oC$. The current in milliamperes that flows in the wire isView Solution
- 2View SolutionA constant voltage is applied between two ends of a metallic wire. If the length is halved and the radius of the wire is doubled, the rate of heat developed in the wire will be
- 3$n$ identical bulbs, each designed to draw a power $p$ from a certain voltage supply, are joined in series across that supply. The total power which they will draw isView Solution
- 4The equivalent resistance between $A$ and $B$ is $......$View Solution
- 5If the length of the filament of a heater is reduced by $10\%$, the power of the heater willView Solution
- 6Two batteries, one of $emf$ $18\, volts$ and internal resistance $2\,\Omega $ and the other of $emf$ $12\, volt$ and internal resistance $1\,\Omega $, are connected as shown. The voltmeter $V$ will record a reading of .............. $\mathrm{volt}$View Solution
- 7A uniform wire of resistance $9$ $\Omega$ is cut into $3$ equal parts. They are connected in the form of equilateral triangle $ABC$. A cell of $e.m.f.$ $2\,V$ and negligible internal resistance is connected across $B$ and $C$. Potential difference across $AB$ is ............... $V$View Solution
- 8How much energy in kilowatt hour is consumed in operating ten $50\, watt$ bulbs for $10$ hours per day in a month ($30$ days).View Solution
- 9View SolutionThe relaxation time in conductors
- 10The charge flowing in a conductor changes with time as $Q ( t )=\alpha t -\beta t ^2+\gamma t ^3$. Where $\alpha, \beta$ and $\gamma$ are constants. Minimum value of current is :View Solution