A windfarm generates electrical power from the wind.. - Edexcel - GCSE Physics - Question 5 - 2012 - Paper 1

To calculate the current, use the formula:

$I = \frac{P}{V}$

where:

• $P$ is the power in watts (322 MW = 322,000,000 W)
• $V$ is the voltage (132 kV = 132,000 V)

Now substituting the numbers:

$I = \frac{322000000}{132000} = 2432.4 \text{ A}$

Thus, the current from the windfarm is approximately 2432.4 A.

First, find the additional power generated by the new turbines:

$539 \text{ MW} - 322 \text{ MW} = 217 \text{ MW}$

Now, to find the power produced by each of the 75 improved turbines:

$\frac{217 \text{ MW}}{75} \approx 2.893 \text{ MW}$

Therefore, each improved turbine produces approximately 2.893 MW.