Calculate the power in the 1 ohm resistor. What do I do?

p1 = 9 watt

Explanation:

first find the current :

i = V/r1 +r2 = 12 / (1+3) = 3 A

Next, find the voltage in the 1 ohm resistor:

V1 = r1 * i = 1 * 3 = 3 volt

Now calculate power in the 1 ohm resistor :

P1 = i * V1 = 3 * 3 = 9 watt

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c) up is the direction the magnetic force is acting on the charge.