A torch bulb is rated 5 volt and 500 milliampere calculate (a) its power (b)its resistance and (c) the energy consumed if this bulb is lighted for 4 hours
Answers
Answered by
2
Explanation:
Power=voltage×current
P=V×I
P=2.5 watt.
by ohm's law V=IR
- 5= 0.5×R
- R=10 Ohm.
also H=VIt
- H=5×0.5×3600
- H=9000 Joule
Answered by
1
Explanation:
Here Potential difference, V= 5v Current, I=500mA=500/1000A =0.5A Now, a) Power = V.I =5*0.5 =2.5W b) From ohm's law, V=RI R=V/I =5/0.5 =10 ohm c) Time for which the bulb is lighted, t =4 h =4*3600s =14400s Energy consumed, H =VIt = 5*0.5*14400 =36000J
Similar questions
Hindi,
6 months ago
Chemistry,
6 months ago
French,
6 months ago
Psychology,
11 months ago
Math,
1 year ago