How to calculate the frequency of an alternating current?
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By using the formula, vE = v2l2/l1, calculate vE with observations 2 to 7.
Record these values in column 4 of the table.
Find mean of above six values of vE.
Then, frequency of alternating current, v = vE/2
Use n= (1/2l) √T/mew, for each set of observation and then take the mean. Compare it with standard frequency(50Hz).
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