U-220v a-4400дж q-?

To find the charge \( q \), we can use the formula that relates potential difference (voltage), energy, and charge:

\[ U = \frac{W}{q} \]

where:

• \( U \) is the voltage (in volts),
• \( W \) is the energy (in joules),
• \( q \) is the charge (in coulombs).

Rearranging the formula to solve for \( q \):

\[ q = \frac{W}{U} \]

Now, substituting in the given values:

• \( W = 4400 \text{ J} \)
• \( U = 220 \text{ V} \)

Substituting the values in:

\[ q = \frac{4400 \text{ J}}{220 \text{ V}} = 20 \text{ C} \]

So, the charge \( q \) is 20 coulombs.