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2.which explains why many modern electronic devices use integrated circuits instead of vacuum tubes? they are smaller but less efficient than vacuum tubes. they are much smaller and more efficient than vacuum tubes. they are more efficient but larger than vacuum tubes. 3. which equation is used to calculate the amount of electrical energy used? e = p + t e = t – p e = t ÷ p e = p × t 4.what is voltage? it is the flow of an electric charge that regularly reverses direction. it is the difference in electrical potential energy between two places in an electric field. it is the flow of an electric charge in only one direction. it is the sum of the electrical potential energy between two places in an electric field.
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