Two lamps have tungsten filaments. The resistances of two
lamps at incandescence are r and R, R being greater than r.
These lamps are connected in series. Then

(1) The lamp with resistance r will shine more brightly

(2) The lamp with resistance R will shine more brightly

(3) Both will shine equally brightly

(4) No prediction can be made regarding brightness

Answer Posted / guest

( 3 ) Both will shine equally brightly

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