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

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) $0.056 \mathrm {~A}$