An electric water heater marked with 220v1100w is connected to the circuit of 220V, and it is powered on for 0.5h, so as to ensure the safety (1) What is the current through the electric water heater? (2) How much kwh of electricity is consumed? (3) How many joules of heat does the current generate in the electric water heater?

An electric water heater marked with 220v1100w is connected to the circuit of 220V, and it is powered on for 0.5h, so as to ensure the safety (1) What is the current through the electric water heater? (2) How much kwh of electricity is consumed? (3) How many joules of heat does the current generate in the electric water heater?

(1) What is the current through the electric water heater?
1100/220=5A
(2) How much kwh of electricity is consumed?
1.1kw*0.5h=0.55kw.h
(3) How many joules of heat does the current generate in the electric water heater?
3.6*10^6*0.5=1.8*10^6j

How much Coke does a "220 V 1000 W" electric water heater consume when it works for 10 minutes

P = 1000W, t = 10min * 60s = 600s
W = Pt = 1000 * 10 * 60 = 600000 (joules)

1: A "220V 880W" electric water heater, connected to the home circuit, to find (1) electric water heater normal working current?
(2) What is the resistance of the electric water heater when it works? (3) what is the power consumption of the electric water heater when it works for one hour?
To calculate the process

1. The first question is easy to calculate!
First, calculate the working current
880 watts except 220 volts!
2. A good answer to the second question:
Divide by current and voltage!
3. The third question is simpler
Electricity consumption is measured in kilowatt hour!
880W only 0.88kw!
0.88 times 1 hour is its power consumption!
--Lonely mountain people