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A voltage of 120 V is applied across a coded resistor having first,second and third rings of blue,black and yellow colours respectively. The current through the resistor is |
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Answer» The Psychological Study of Smiling. ...Psychologists call this the “Duchennesmile,” and most consider it the SOLE INDICATOR of true enjoyment. The name is a nod to French anatomist Guillaume Duchenne, who studied emotional expression by stimulating various facial MUSCLES with electrical CURRENTS. |
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