A wattmeter is used to measure the power of a load.
The resistance of a ballast can vary depending on its design and specific characteristics. To calculate the resistance of a 36-watt ballast, you would first need to know the voltage it operates at. Using Ohm's Law (R = V^2 / P), where R is resistance, V is voltage, and P is power, you can determine the resistance.
The SI unit for power is the watt, symbolized as W.
the answer for the si unit of power is the watt or w
When connected to a 110-volt supply, the 60-watt 220-volt lamp will consume power that is calculated using the formula P = V^2 / R, where P is power, V is voltage, and R is resistance. Since the resistance of the lamp remains constant, the power consumption would be (110^2 / 220) = 55 watts. Thus, the lamp would consume 55 watts of power when connected across a 110-volt supply.
The unit of power measured is watt, irrespective of resistance, capacitance or inductance of the circuit.
A power rating of 1 joule per second is known as 1 watt.
If you mean how to use a resistance of so much power then it can be easily done through a step-down transformer which lowers the voltage supply and hence the power.
Ohm's Law: V = I * R (Voltage = Current * Resistance) Watt's Law: P = V * I (Power = Voltage * Current)
They're are not related. Watts are measurement of power while Ohms are measurement of resistance. One watt equals one volt times one amp.
Power = I2 R = (0.02)2 x (1,000) = 0.4 watt
No. The power (in watts) would decrease, due to the greater effective resistance.
As per the formula for power (Power (Watt) = Voltage (V) x Current (i) & Resistance (R) = V / i), 25w lamp bulb would have higher resistance compared to that of 5w lamp bulb.
voltage is measured in ohms which is represented by the omega sign.
The resistance of a light bulb varies, depending on the type of bulb, the power rating, and the temperature. A typical incandescent 60 watt bulb, for instance has a cold resistance of about 30 ohms, and a hot resistance of about 240 ohms.
A "watt" is a derived unit of power.
Ohm ( Ω ).