In the Circuit Shown in the Figure $R _ { 1 } = R _ { 2 } = 90.0 \Omega , R _ { 3 } = R _ { 4 } = 20.0 \Omega , V _ { 1 } = 7.0 \mathrm {~V} , V _ { 2 } = 8.0 \mathrm {~V}$

question 289

Multiple Choice

In the circuit shown in the figure, $R _ { 1 } = R _ { 2 } = 90.0 \Omega , R _ { 3 } = R _ { 4 } = 20.0 \Omega , V _ { 1 } = 7.0 \mathrm {~V} , V _ { 2 } = 8.0 \mathrm {~V}$ , and the batteries are both ideal. What current does the ammeter read?

• A) \(0.050 \mathrm {~A}\)
• B) \(0.83 \mathrm {~A}\)
• C) \(0.40 \mathrm {~A}\)
• D) \(0.056 \mathrm {~A}\)

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Definitions:

Optimal Tax

A tax system designed to achieve the best balance between efficiency and equity.

Marginal Social Benefit

The supplementary gain for society derived from the consumption of one extra unit of a good or service.

Marginal Social Cost

The cost to society of producing an additional unit of a good or service, including both private costs and any externalities.

Marginal Social Benefit

The additional gain to society as a whole from an additional unit of a good or service.