A bread toaster and a bulb are connected parallel in a circuit. The toaster produces more heat than the bulb. Which of the following statements is true?

Resistance of toaster is greater than resistance of bulb

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Resistance of bulb is same as the resistance of toaster

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Resistance of bulb is greater than resistance of toaster

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Cannot predict

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Resistance of bulb is greater than resistance of toaster
Since the bread toaster and the bulb are connected in parallel, voltage is same across each of them.
$V_{t o a s t e r} = V_{b u l b} . . . . . . . . (i)$

It is given that toaster produces more heat than the bulb.
$⟹ P_{t o a s t e r} > P_{b u l b}$
Using Joule's Law of heating for electrical resistance,
$\frac{V_{t o a s t e r}^{2}}{R_{t o a s t e r}} > \frac{V_{b u l b}^{2}}{R_{b u l b}} . . . . . . . . (i i)$
From (i) & (ii),
$R_{b u l b} > R_{t o a s t e r}$

Hence, resistance of bulb is greater than that of the toaster.

Suggest Corrections

Similar questions

A toaster produces more heat than a light bulb when connected in parallel to a 220V mains. Which one has a greater resistance. Please give detailed explanation.

Q. A toaster produces more heat than an electric lamp when they are connected in parallel. Which of the two has the greater resistance?

Q. If two electric bulbs one of

200 V - 40 W

and other of

200 V - 100 W

are connected in a domestic circuit, then

Two electric bulbs A and B are rated as 60W and 100W. if they are connected in parallel to the same source, then

Q. Assertion :Resistance of 50W bulb is greater than that of 100 W. Reason: Resistance of bulb is inversely proportional to rated power.

Join BYJU'S Learning Program