document.write( "Question 1182453: A transformer has a secondary voltage of 140 volts and a secondary current of 3.5 amps. If the primary current is 10 amps, what is the primary voltage? (In this case, the voltages and currents are inversely proportional.) \n" ); document.write( "
Algebra.Com's Answer #812478 by mananth(16946)\"\" \"About 
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The general formula for voltage current and number of turns in a transformer is\r
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\n" ); document.write( "\n" ); document.write( "\"+Np%2FNs+=+Vp%2FVs+=+Is%2FIp\"\r
\n" ); document.write( "\n" ); document.write( "where N is number of turns is the voltage
\n" ); document.write( "I is the current\r
\n" ); document.write( "\n" ); document.write( "p is primary coil
\n" ); document.write( "s secondary coil\r
\n" ); document.write( "\n" ); document.write( "\"Vp%2F140+=+3.5%2F10\"\r
\n" ); document.write( "\n" ); document.write( "Vp = 14 *3.5 =49 Volts\r
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