Final answer:
The current through the 7.00-Ω resistor is 10.0 A, and the potential difference across it is 70.0 V.
Step-by-step explanation:
To calculate the current through the 7.00-Ω resistor, we can use the formula P = IV, where P is power dissipated, I is current, and V is potential difference. Since we know the power dissipated is 70.0 watts, we can rearrange the formula to solve for I: I = P/V. Substituting the given values, I = 70.0/7.00 = 10.0 A.
To find the potential difference across the resistor, we can use Ohm's law, V = IR, where V is potential difference, I is current, and R is resistance. Substituting the known values, V = 10.0 * 7.00 = 70.0 V.