Batteries are usually identified by their voltage.

Physics

1 answer:

Fynjy0 [20]3 years ago

7 0

Answer:

Explanation:

Given parameters:

Electrical energy = 18J

Quantity of charge Q = 12C

Unknown:

Voltage = ?

Solution:

The expression of electrical potential energy is given as:

Electrical potential energy = $\frac{1}{2}$ c v²

c is the quantity of charge

v is the voltage

18 = $\frac{1}{2}$ x 12 x v²

18 = 6v²

v² = 3

v = 1.7v

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