A 25, W,220, V bulb and a 100, W,220, V bulb | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) When bulbs are connected in parallel,the potential difference $(V)$ across each bulb is the same.The power consumed by a bulb is given by the form

Vedclass · Accepted Answer

$100\, W$ bulb

Vedclass · Answer

(B) When bulbs are connected in parallel,the potential difference $(V)$ across each bulb is the same.The power consumed by a bulb is given by the formula $P = \frac{V^2}{R}$.Since $V$ is constant,the power consumed is directly proportional to the rated power of the bulb $(P \propto P_{rated})$.Therefore,the bulb with the higher rated power will consume more electrical energy per unit time and glow more brightly.Thus,the $100\, W$ bulb will glow more brightly than the $25\, W$ bulb.

$A$ $25\, W$,$220\, V$ bulb and a $100\, W$,$220\, V$ bulb are connected in parallel across a $220\, V$ line. Which bulb will glow more brightly?

Similar Questions

An electric heater of resistance $6 \, \Omega$ is run for $10 \, \text{minutes}$ on a $120 \, \text{V}$ line. The energy liberated in this period of time is:

Why is electric power transmitted at very high voltage over long distances to reduce Ohmic loss?

$1\,\text{unit} =$ ...... electric energy.

Which of the following plots may represent the thermal energy produced in a resistor in a given time as a function of the electric current?

$A$ $220\, V$ and $800\, W$ electric kettle and three $220\, V$ and $100\, W$ bulbs are connected in parallel. On connecting this combination with a $220\, V$ electric supply,the total current will be ................ $A$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module