A beam of well collimated cathode rays travelling with a speed of $$5\times {{10}^{6}}\,m{{s}^{-1}}$$ enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If $$|B|\,=0.02\,T$$, the magnitude of the electric field is [Haryana CEE 1996]

Question

A beam of well collimated cathode rays travelling with a speed of $$5\times {{10}^{6}}\,m{{s}^{-1}}$$ enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If $$|B|\,=0.02\,T$$, the magnitude of the electric field is                                                               [Haryana CEE 1996]

TuteeHUB · Accepted Answer

$$2.5\times {{10}^{8}}\,V{{m}^{-1}}$$

TuteeHUB · Answer

$${{10}^{5}}\,V{{m}^{-1}}$$

TuteeHUB · Answer

$$1.25\times {{10}^{10}}\,V{{m}^{-1}}$$

TuteeHUB · Answer

$$2\times {{10}^{3}}\,V{{m}^{-1}}$$

1.	A beam of well collimated cathode rays travelling with a speed of \[5\times {{10}^{6}}\,m{{s}^{-1}}\] enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If \[\|B\|\,=0.02\,T\], the magnitude of the electric field is [Haryana CEE 1996]
A.	\[{{10}^{5}}\,V{{m}^{-1}}\]
B.	\[2.5\times {{10}^{8}}\,V{{m}^{-1}}\]
C.	\[1.25\times {{10}^{10}}\,V{{m}^{-1}}\]
D.	\[2\times {{10}^{3}}\,V{{m}^{-1}}\]
Answer» B. \[2.5\times {{10}^{8}}\,V{{m}^{-1}}\]

A beam of well collimated cathode rays travelling with a speed of \[5\times {{10}^{6}}\,m{{s}^{-1}}\] enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If \[|B|\,=0.02\,T\], the magnitude of the electric field is [Haryana CEE 1996]

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