Question
A tightly wound long solenoid carries a current of
1.5 A. An electron is executing uniform circular motion inside the solenoid with a time period of 75 ns . The number of turns per metre in the solenoid is __________ .
[Take mass of electron $m _e=9 \times 10^{31} kg$, charge of electron $\left| q _e\right|=1.6 \times 10^{-19} C$,$
\left.\mu_{o}=4 \pi \times 10^{-7} \frac{N}{A^2}, 1 ns=10^{-9} s\right]
$
1.5 A. An electron is executing uniform circular motion inside the solenoid with a time period of 75 ns . The number of turns per metre in the solenoid is __________ .
[Take mass of electron $m _e=9 \times 10^{31} kg$, charge of electron $\left| q _e\right|=1.6 \times 10^{-19} C$,$
\left.\mu_{o}=4 \pi \times 10^{-7} \frac{N}{A^2}, 1 ns=10^{-9} s\right]
$
