Heat and Thermal ExpansionHard
Question
Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by 15 cm length of wire $Q$ is $\_\_\_\_$ .
( $\mu_{0} = 4\pi \times 10^{- 7}\text{ }T.m/A$ )
Options
A.$6 \times 10^{- 7}\text{ }N$ towards $P$
B.$6 \times 10^{- 6}\text{ }N$ towards $R$
C.$6 \times 10^{- 7}\text{ }N$ towards $R$
D.$6 \times 10^{- 6}\text{ }N$ towards $P$
Solution
$F_{\text{net~}} = \frac{\mu_{0}}{2\pi}I_{0}\left( \frac{I_{1}}{{\text{ }d}_{1}} + \frac{I_{2}}{{\text{ }d}_{2}} \right)\mathcal{l}$
$${F_{\text{net~}} = 2 \times 10^{- 7} \times 1\left( \frac{3}{3} + \frac{2}{2} \right) \times \frac{15 \times 10^{- 2}}{10^{- 2}} }{= 4 \times 15 \times 10^{- 7} }{F_{\text{net~}} = 6 \times 10^{- 6}\text{ }N}$$
Create a free account to view solution
View Solution FreeMore Heat and Thermal Expansion Questions
The amount of work done in stretching a spring from a stretched length of 10 cm to a stretched length of 20 cm is-...In the previous question, If the specific latent heat of vaporization of water at 0oC is time the specific latent heat o...N(< 100) Molecules of a gas have velocities 1, 2, 3.........N , km/s respectively . Then :-...Hailstone at 0oC falls from a height of 1 km on an insulating surface converting whole of its kinetic energy into heat. ...A brass wire of length 2 m and radius 1 mm at $27^{\circ}C$ is held taut between two rigid supports. Initially it was co...