defence exam Navy SSR (Medical) Mock Test Series 2025 Physics Electric Charges and Coulomb's Law Electric Charge
A beam of cathode rays is subjected to crossed Electric (E) and Magnetic field (B). The fields are adjusted such that the beam is not deffected. The specific charge of the cathode rays is given by (where V is the potential difference between cathode and anode)
1
\(\frac{{{E}^{2}}}{2~V{{B}^{2}}}\)
2
\(\frac{{{B}^{2}}}{2V{{E}^{2}}}\)
3
\(\frac{2~V{{B}^{2}}}{{{E}^{2}}}\)
4
\(\frac{2~V{{E}^{2}}}{{{B}^{2}}}\)