A torch bulb is rated 5v and 500mA calculate it's 1.power 2.Resistance 3.Energy consumed when it is lighted for 6 hours everyday.

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Solution

Power = VI
= 5 V500/1000 A
=2.5 watt

resistance = V / I
= 5V / 0.005 A
= 1000 ohm

energy in 6 hours
= 2.5 watt * 6 * 3600 second
= 15* 3600 jule
= 54000 J
= 54 kilo jule

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A torch bulb is rated 5v and 500mA calculate it's 1.power 2.Resistance 3.Energy consumed when it is lighted for 6 hours everyday.

Power = V*I = 5 V*500/1000 A =2.5 watt resistance = V / I = 5V / 0.005 A = 1000 ohm energy in 6 hours = 2.5 watt * 6 * 3600 second = 15* 3600 jule = 54000 J = 54 kilo jule

Power = VI
= 5 V500/1000 A
=2.5 watt

resistance = V / I
= 5V / 0.005 A
= 1000 ohm

energy in 6 hours
= 2.5 watt * 6 * 3600 second
= 15* 3600 jule
= 54000 J
= 54 kilo jule