Answer with explanation
a) Formula to find the current that passes through a circuit is :
Voltage = Current × Resistance
Given that,
Voltage = 45V
Resistance = 39Ω
Current =?
Let us find it now.
V = I × R
45V = I × 39Ω
Divide both sides by 39.
1.153A = I = Current
b) Formula to find the energy is:
Energy = voltage × current × time
= 45V × 1.153A × ( 5 × 60)s
= 15565.5 J
= 15.5655kJ
