A 500W electric heater is designed to work with a 200 V line. If the voltage of the line drops to 160V, then what will be the percentage loss of the heat developed?

A 500 W heating unit is designed to operate from a 115 V line. If the line voltage drops to 110, the percentage drop in heat output will be

A 1000 W heater is designed to operate on a 120 V line.The line voltage drops to 110 V . The percentage of heat output drops by

A 800W electrical device is designed to work in 200V. What will be its power if the device is working in 100 V ?

A 400W electrical device is designed to work in 100V. What will be its power if the device is working in 100V.

A 500W heating unit is designed to operate from a 115 "volt" line. If the line voltage drop to 110 "Volt" , the percentage drop in heat output will be

Each of two electric lamps of power 500 W is designed to work in 220 V line . If the lamps are connnected in series and the combination is connected to 110 V line , what will be the power of each lamp ?

A 500 W heater is designed to operate at 200 V potential difference. If it is connected across 160 V line, the heat it will produce in 20 minutes is

A 660-W electric lheater is hdesigned to operate from 129V lines. What is the resistance? What current does it draw? What is the rate of production of heat in calories per second? If the line voltage drops to 110V. What is power does the heater takes in waits? (J=4.2 joules per calorie).

An electric heater is rated 1000 W - 200 V. Calculate the resistance of the heating element.

A 500 W heating unit is designed to operate from a 200 V line . By what percentage will its heat output drop if the line voltage drops to 160 V ? Find the heat produced by it in 10 min.