Three appliances are connected in parallel to the same source whi… - Vidyadip

Question

Three appliances are connected in parallel to the same source which provides a voltage of 220V. A fuse connected to the source will blow if the current from the source exceeds 10A. If the three appliances are rated at 60W, 500W and 1200W at 220V, will the fuse blow?

✓

Answer

Voltage of power supply, V = 220V
Power rating of the first appliance = 60W
So, current drawn by the first appliance $=\frac{60}{220}=0.27\text{A}$
Power rating of the second appliance = 500W
So, current drawn by the second appliance $=\frac{500}{220}=2.27\text{A}$
Power rating of the first appliance = 1200W
So, current drawn by the first appliance $=\frac{1200}{220}=5.45\text{A}$
Net current drawn by all the appliances = 0.27 + 2.27 + 5.45 = 5.99A
It is given that the rating of the fuse is 10 A. It will not blow when all the appliances are used together because current capacity of the fuse is more than the value of current drawn by the device.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Questions]" from Magnetic Effects of Electric Current→Magnetic Effects of Electric Current — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Explain the terms:

Implantation.
Placenta.

What is the average duration of human pregnancy?

What is the advantage of using a convex mirror as a rear-view mirror in vehicles as compared to a plane mirror? Illustrate your answer with the help of labelled diagrams.

A person walks across a room in barefeet and puts his foot on a drawing pin lying on the floor. He lets out a cry. Explain what happens in his nervous system in bringing about this response.

What will be the resistance of a metal wire of length 2 metres and area of cross-section 1.55 × 10m , if the resistivity of the metal be 2.8 × 10 m?

Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9, respectively. Which solution is

Neutral?
Strongly alkaline?
Strongly acidic?
Weakly acidic?
Weakly alkaline?

Arrange the pH in increasing order of hydrogen-ion concentration.

The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.

‘‘A trait may be inherited, but may not be expressed.’’ Justify this statement with the help of a suitable example.

A non-metal gains electrons to form anions. What do you mean by this statement?

Why is the colour of the clear sky blue?

State the meaning of functional group in a carbon compound. Write the functional group present in (i) ethanol and (ii) ethanol acid and also draw their structures.