A bulb of resistance 925 Ω works on 230 V. The filament was broken. It was joined together and made to work. Let the resistance of the
filament now be 640 Ω. What is the change in the power of the bulb?
What is the current flowing through the bulb?

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54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

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