Cost of a energy from a battery

Thread starter haleyscavone
Start date Dec 4, 2008
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haleyscavone

Thread starter
Dec 4, 2008

A transistor radio operates by means of a 9.5 V battery that supplies it with a 58 mA current.

(a) If the cost of the battery is $0.85 and it lasts for 300 h, what is the cost per kWh to operate the radio in this manner?

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mgb_phys

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Homework Helper

Dec 4, 2008

You have to make an attempt at the question!
How do you calculate Watts form volts and amps?
What is a KWh?

Cost of a energy from a battery

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