WebThe current flowing through an appliance can be calculated using the equation: ... A bed side lamp is rated 60 W, 240 V. Calculate the size of fuse that should be fitted to the lamp for it to ... WebCorrect option is D) P= RV 2. We assume rated voltage of both bulbs is same so R∝ P1. thus, R 40>R 60. As they are connected in parallel so potential across them will be same i.e V. now, power dissipation , P∝ R1. thus, P 60>P 40 as R 40>R 60. Therefore 60 W bulb will give more lights. Was this answer helpful?
Selecting the correct fuse - Electricity in the home - BBC Bitesize
WebJan 11, 2024 · Once you know all these values, the foot-candle calculator will determine how many lumens you need. We use the following equation: \text {lumens} = \text {lux} \cdot \text {area} lumens = lux ⋅ area. You can … WebAn electric heater works by passing a current of 100A through a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it? Voltage: 50V A light bulb has a resistance of 5 ohms and a maximum current of 10A. b群連鎖球菌 原因
Three light bulbs of 40W, 60W and 100W are connected in series …
WebOhm's Law Calculator; Voltage Divider Calculator; LED Calculators. mcd to Lumens Converter; LED Resistor Calculator; Other Calculators. 555 Astable Calculator; 555 … WebJun 22, 2011 · The resistance of the 60w bulb will be (from P=V*V/R) 240 ohms. For 100W, R=144 ohms. The total series resistance of the ckt is 384 ohms. (From ohm's law) At 120V, current flowing thru the series ckt will be I=120/384= 0.3125Amps. So you have a 23W bulb and a 14W bulb. The 23W obviously glows brighter. WebSo to find the current drawn, simply divide the power by the operating voltage. In the United States, most household appliances work at 110 … taurin wirkung hpu