At `t=0`, an inductor of zero resistance is joined to a cell of emf `varepsilon` through a resistance. The current increases with a time constant `tau`. The emf across the coil after time `t` isA. `varepsilont//tau`B. `varepsilon(1-e^(-t/tau))`C. `varepsilone^(-t//tau)`D. `varepsilone^(-2//tau)`

At `t=0`, an inductor of zero resistance is joined to a cell of emf `v

1.	At `t=0`, an inductor of zero resistance is joined to a cell of emf `varepsilon` through a resistance. The current increases with a time constant `tau`. The emf across the coil after time `t` isA. `varepsilont//tau`B. `varepsilon(1-e^(-t/tau))`C. `varepsilone^(-t//tau)`D. `varepsilone^(-2//tau)`
Answer» Correct Answer - C

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At `t=0`, an inductor of zero resistance is joined to a cell of emf `varepsilon` through a resistance. The current increases with a time constant `tau`. The emf across the coil after time `t` isA. `varepsilont//tau`B. `varepsilon(1-e^(-t/tau))`C. `varepsilone^(-t//tau)`D. `varepsilone^(-2//tau)`

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