Electric Power. Complete the table Power (watt) Resistance (ohms) Current (A) Voltage (v) Kettle Dryer (red) Dryer (white) Filter.

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Presentation transcript:

Electric Power

Complete the table Power (watt) Resistance (ohms) Current (A) Voltage (v) Kettle Dryer (red) Dryer (white) Filter

Why do you have different powers for the dryer ( red - white )? What is the definition of power ?

2- Power = voltage^2 /resistance 1- Power = energy / time 3- Power = current X voltage 4- Power = current ^2 X resistance

Complete the table Power (watt) Resistance (ohms) Current (A) Voltage (v) Kettle Dryer (red) Dryer (white) Filter

Complete the table Power (watt) Resistance (ohms) Current (A) Voltage (v) Kettle Dryer (red) Dryer (white) Filter

Complete the table Power (watt) Resistance (ohms) Current (A) Voltage (v) Kettle Dryer (red) Dryer (white) Filter

Qs. Q1 : if I = 2 A V = 5 v find P = ? Q2 : if P = 22 watt V = 15 v find I = ? Q3 : if I = 0.54mA R = 5 ohms find P= ? Q4 : if W = 33 J t= 3s find P = ? Q5 : if P = 220 watt t = 4min find W = ?

Did you see this object ? And Where ?

The fused plug What is the function of fused ?