JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Medium

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Application +4 | -1

A cathode emits

1.8 \times {10^{14}}

electrons per second. When heated when 400 V is applied to anode all the emitted electrons reach the anode. The charge on electron is

1.6 \times {10^{ - 19}}C

. The maximum anode current is

View answer and explanation

Correct option: B

29\,\mu A

Option B (

29\,\mu A

) is correct because the current is calculated by multiplying the number of electrons emitted per second by the charge of an electron.

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