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If V1 increases from 2 V to 6 V then cha...

If `V_1` increases from `2 V to 6 V` then change of current will be-

A

zero

B

20 Ma

C

80/3mA

D

40mA

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Knowledge Check

  • When light of frequency v_(1) is incident on a metal with work function W (where hv_(1) gt W ) the photocurrent falls to zero at a stopping potential of V_(1) . If the frequency of light is increased to v_(2) , the stopping potential changes to V_(2) . Therefore the charge of an electron is given by

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    `(W (v_(2) - v_(1)))/(v_(1) V_(2) - v_(2) V_(1))`
    D
    `(W (v_(2) - v_(1)))/(v_(2) V_(2) - v_(1) V_(1))`

  • A transistor is operated in common-emitter configuration at V_(C)=2 V such that a change in the base current from 100 mu A to 300 mu A produces in the collector current from 10 mA to 20 mA. The current gain is

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  • A current flowing through a coil changes from +2A to -2A in 0.05 s and an emf of 8 V is induced in the coil. The value of self-inductance of the coil is

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