An ideal transformer is illustrated in the figure below.
The primary coil of the transformer has 2700 turns. The secondary coil has 450 turns. The e.m.f. 
applied across the primary coil is given by the expression
where is measured in volts and 
is the time in seconds. Calculate the root-mean-square (r.m.s.) e.m.f. induced in the secondary coil.
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