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If Fuse of 250 Ma, 500 Ma, 1 A, 5 a and 10 a Were Available, Which One Would Be the Most Suitable for Protecting an Amplifier Rated at 240 V, 180 W? - CBSE Class 10 - Science

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Question

If fuse of 250 mA, 500 mA, 1 A, 5 A and 10 A were available, which one would be the most suitable for protecting an amplifier rated at 240 V, 180 W?  

Solution

We will first calculate the current.
Here,
P = 180 W
V = 240 V
Now, power, P = `VxxI`
or, I = P/V = 180/240 = 0.75 A
So, a fuse of 1 A will be most suitable. 

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APPEARS IN

 Lakhmir Singh Solution for Physics for Class 10 (2019 Exam) (2018 to Current)
Chapter 2: Magnetic Effects of Electric Current
Q: 8 | Page no. 114
Solution If Fuse of 250 Ma, 500 Ma, 1 A, 5 a and 10 a Were Available, Which One Would Be the Most Suitable for Protecting an Amplifier Rated at 240 V, 180 W? Concept: Magnetic Effect of a Current.
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