3000 joules(J)
An electric bulb rated at 40 watts does 40 joules of work in one second. This is because the watt is defined as one joule per second. Therefore, a 40-watt bulb converts 40 joules of electrical energy into light and heat every second it is on.
More watts means it uses more energy per second (watt is a unit of power). If it is a light-bulb of the same type of technology, the higher-watt light bulb would also give off more light.
The more energy that is transferred in a certain time, the greater the power. A 100W light bulb transfers more electrical energy each second than a 60W light bulb.The equation below shows the relationship between power, potential difference (voltage) and current:power (watts) = current (amps) x potential difference (volts)
None. But it does convert 5 watts of electrical power (energy per unit time) into 5 watts of [light + thermal] power.
A watt is a measurement of electricity, usually pertaining to light. Light bulbs luminosity is graded by wattage, such as a 60 watt bulb, 100 watt bulb and so on. You would find a watt in a light bulb, to start.
A 60 watt light bulb is a light bulb with 60 watts capacity. When talking about watts, you're talking about the power that is transferred from the appliance to the accessories. Therefore, the light bulb labeled "60 watts" takes 60 watts to light up. A 60 watt light bulb will not be as bright as a 120 watt light bulb.
3000 joules(J)
An electric bulb rated at 40 watts does 40 joules of work in one second. This is because the watt is defined as one joule per second. Therefore, a 40-watt bulb converts 40 joules of electrical energy into light and heat every second it is on.
More watts means it uses more energy per second (watt is a unit of power). If it is a light-bulb of the same type of technology, the higher-watt light bulb would also give off more light.
The more energy that is transferred in a certain time, the greater the power. A 100W light bulb transfers more electrical energy each second than a 60W light bulb.The equation below shows the relationship between power, potential difference (voltage) and current:power (watts) = current (amps) x potential difference (volts)
None. But it does convert 5 watts of electrical power (energy per unit time) into 5 watts of [light + thermal] power.
A watt is a measurement of electricity, usually pertaining to light. Light bulbs luminosity is graded by wattage, such as a 60 watt bulb, 100 watt bulb and so on. You would find a watt in a light bulb, to start.
In the sense of 'work' as force moving through a distance, a light bulb does none of that. But in the sense that mechanical work is equivalent to energy in other realms, the 75-watt light bulb consumes 75 joules of electrical energy every second, and radiates 75 joules per second of energy in the form of light and heat.
A 15-watt fluorescent should produce about as much light as a 75-watt incandescent.
A Watt is a Joule per second. Joules measure energy and Watts measure power, which is the rate of energy used. Therefore, if you use a 60 Watt light bulb for 10 seconds, you consume 600 Joules.
Yes, a 100-watt light bulb is brighter than a 60-watt light bulb because it produces more light.
A 60 watt bulb uses 60 watts of power continuously per second. It is consistent with the definition of power, which is the rate at which energy is consumed or produced. Therefore, a 60 watt bulb would use the same amount of power as another 60 watt bulb within the same timeframe of a second.