It protects the electrical appliance and the person from electrical shocks/faults.
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Answer: I think the answer is D
Explanation: N/A
Since work is the change in kinetic energy, the efficiency of a machine can be stated as the percentage of the output work divided by the input work minus the work lost from to friction and heat. Multiply Eff by 100% to get the efficiency percentage.
The use of drugs to treat disease is called medication
