A bulb is rated as 250 V; 0.4 A. Find its : (i) power, and (ii) resistance.

Open in App

Solution

(i) Power = V×I= 250×0.4= 100W
(ii) Resistance = V/I= 250/0.4= 625 ohm.

Suggest Corrections

Similar questions

A light bulb is rated at 125 W for a 250 V a.c., supply.
Calculate the resistance of the bulb.

Q. An electric bulb is rated as 400 W, 250 volt (i) find the rated current
(ii) if the bulb is connected to a 200 V supply, find its power

A torch bulb is rated 2.5 V and 750 mA. Calculate (i) its power (in W), (ii) its resistance (in $Ω$ ) and (iii) the energy consumed (in J) if this bulb is lighted for four hours.

A torch bulb is rated 2.5 volts and 750 mA. Calculate:(i)it's resistance (ii) it's power (iii) energy consumed if this bulb is lighted for four hours.

Q. A bulb is rated at 5V, 100mA. Calculate its (1) Power (2) Resistance

Join BYJU'S Learning Program

A bulb is rated as 250 V; 0.4 A. Find its : (i) power, and (ii) resistance.

(i) Power = V×I= 250×0.4= 100W (ii) Resistance = V/I= 250/0.4= 625 ohm.

(i) Power = V×I= 250×0.4= 100W
(ii) Resistance = V/I= 250/0.4= 625 ohm.