Electric Circuits
The plates of lead acid storage battery are most likely to be short circuited if

 the electrolyte evaporates.
 the battery charged too slowly.
 sediment collect at the bottom of the battery.
 too much water is added.

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Electric Circuits
A battery of E Volts is supplying a steady current to a series circuit of total resistance RΩ and inductance L Henry. A part R1 of the total resistance is suddenly short circuited. Find the expression for current flowing through the battery subsequent to the operation.

None of these
 i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L}
 i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L}
 i = {E / R1 - R)}(1- e - (R1 - R) t / L)

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