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lawyer [7]
3 years ago
15

A hydrogen fuel cell supplies power for a small motor. the fuel cell delivers a current of 0.5 a and a voltage of 0.43 v. what i

s the power supplied to the motor by the fuel cell?
Physics
1 answer:
Alexandra [31]3 years ago
3 0
<span>the power supplied to the motor by the fuel cell is 0.31 watts.
</span>
The current , I is 0.5 A.
Voltage, V is 0.43 V

From ohm's law: V = IR 
Thus, R = 0.43/0.5 = 0.86Ω

Now, Power = I^{2}R
                     = 0.5 ×0.5×0.86
                     = 0.215 W
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Answers are:
(1) KE = 1 kg m^2/s^2
(2) KE = 2 kg m^2/s^2
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Explanation:

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