The supply voltage to a room is 120 V. The resistance of the lead wires is 6Ω . A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb?
(1) 2.9 Volt
(2) 13.3 Volt
(3) 10.04 Volt
(4) zero Volt