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
1 2512why tungsten is used in incandescent lamp instead of nichrome though nichrome has high melting point
2 3618