Advertisements
Advertisements
Question
Three 250 W heaters are connected in parallel to a 100 V supply, Calculate the resistance of each heater.
Advertisements
Solution
The resistance of each heater
Since P = `"V"^2/"R"`
or I = `"V"^2/"R" = (100 xx 100)/250 = 40 Omega`
Therefore, 40 Ω is the resistance of each heater.
RELATED QUESTIONS
Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?
Which quantity has the unit of watt?
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
Write the formula for electric power in terms of potential difference and current.
What is the current I in the given circuit (Fig. )?
Name three main characteristics of an heating element.
An Electric bulb is marked 100 W, 230 V. What how long would this lamp take to consume one unit of electricity?
