A 480 V battery pack is used to accelerate an electric car over a time interval of 9.5 s. If 1527 C of charge flow through the battery pack during this acceleration period, determine the horsepower of the car's engine.

104 horsepower

Explanation:

Given:

Voltage across the terminals of the battery (V) = 480 V

Charge flowing through the battery pack (Q) = 1527 C

Time interval for charge flow (Δt) = 9.5 s

Now, current flowing through the battery pack is given as:

Now, power of the car's engine is calculated using the formula:

Plug in the given values and solve for 'P'. This gives,

Now, 1 horsepower (hp) = 745.7 W

Therefore, 1 W =

So,

Hence, the horsepower of the car's engine is approximately 104 horsepower

the answer is b ) square root of 5

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