Electrical Energy and Power

3.4

Electrical Energy and Power

	Relationship between\(E\,,V\,,I\) and \(t\)
	\(E = V \,I\, t\)

	Relationship between\(P\,,V\) and \(I\)
	\(P=V\,I\)

Relationship between\(P\,,V\,,I\) and \(R\)

\(P=I^2\,R\)

\(P=\dfrac{V^2}{R}\)

	Energy consumed for electrical devices, \(E\)
	\(E = P\,t\)

	Cost of consumption
	\(\text{Total cost} = E \times \text{Cost per kWh}\)

3.4

Electrical Energy and Power

	Relationship between\(E\,,V\,,I\) and \(t\)
	\(E = V \,I\, t\)

	Relationship between\(P\,,V\) and \(I\)
	\(P=V\,I\)

Relationship between\(P\,,V\,,I\) and \(R\)

\(P=I^2\,R\)

\(P=\dfrac{V^2}{R}\)

	Energy consumed for electrical devices, \(E\)
	\(E = P\,t\)

	Cost of consumption
	\(\text{Total cost} = E \times \text{Cost per kWh}\)