If i = -1A, v = 5V, the circuit element below is supplying power. True or false?

In the circuit below, v_s = 2 Volts, R₁ = 7Ω, R₂ = 6Ω. Find i in Amps. Give your answer to 3 decimal places.

In the circuit below, i = 7.8 Amps, R₁ = 9.3Ω and R₂ = 6.1Ω. Find V_s in Volts to 2dp.

How many loops are there in this circuit? Express your answer as an integer.

For the loop picture below, v₁ = 1 V, v₂ = -1 V and v₃ = -2 V. Find v_x in Volts.

How many nodes are in this circuit? Express your answer as an integer.

At the node picture below, i₁ = -2 A, i₂ = -3 A and i₃ = 4 A. Find i_x in Amps.

In the circuit below, v_s = -3 Volts, R₁ = 7Ω, R₂ = 8Ω. Find i in Amps. Give your answer to 3 decimal places.