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

What is the power absorbed in Watts by a resistor with resistance of 7Ω connected to a current source of 2.7 Amps? Give your answer to 3 dp.

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

In the circuit below, v_s = 4 Volts, R₁ = 3Ω, R₂ = 3Ω. Find i in Amps. Give your answer to 3 decimal places.

In the circuit below, i = 2.8 Amps, R₁ = 9.1Ω and R₂ = 4.1Ω. Find V_s in Volts to 2dp.

For the loop picture below, v₁ = -1 V, v₂ = 4 V and v₃ = 4 V. Find v_x in Volts.

At the node picture below, i₁ = 1 A, i₂ = 1 A and i₃ = 1 A. Find i_x in Amps.

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

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

What is the power absorbed in Watts by a resistor with resistance of 4.4Ω is connected to a voltage source of 8.4 Volts? Give your answer to 3 dp.