General Circulation of the Atmosphere|Hadley Cell|Ferrel Cell|Wind Systems|Primary Winds|Wasterlies and Easterlies|Secondary Winds

Differentiate between primary and secondary cells.

The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1 mA. The number of turns of the primary and secondary windings are 50 and 100 respectively.The voltage in the secondary and the current drawn by the circuit in the secondary are respectively

Why are wind currents generated?

If a transformer have turn tatio 5, frequency 50 Hz root mean square value of potential difference on primary 100 volts and the resistance of the secondary winding is 500 Omega then the peak value of voltage in secondary winding will be (the efficiency of the transformer is hundred percent)

List one major difference between primary wall and secondary cell wall.

When the primary current in the spark-coil of a car changes from 4A to zero in 10muS , an emf of 40,000 V is induced in the secondary. The mutual inductance between the primary and the secondary windings of the spark-coil will be -