1.

A heater coil connected to a supply of a 220 V is dissipating some power \[{{P}_{1}}.\] The coil is cut into half and the two halves are connected in parallel. The heater now dissipates a power \[{{P}_{2}}.\] The ratio of power \[{{P}_{1}}\,\,:\,\,{{P}_{2}}\] is         [AFMC 2004]

A.            2 : 1                                          
B.            1 : 2
C.            1 : 4                                          
D.            4 : 1
Answer» D.            4 : 1


Discussion

No Comment Found

Related MCQs