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 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

An electric bulb is designed to draw P_(0) power at V_(0) voltage. If the voltage is V , it drawas power. Then

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).

If the voltage across 500 Omega is 5 V. then R_2 is

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.

A 500W heater is desigened to operatre at 200V potential differnce. It is connected across 160V line, find the heat it will produce in 20 minute.

Two electric bulbs, each designed to operate with a power of 500W in 220V line, are in series with a 100 V line. What will be the power generated by each bulb?

An electric heating element consumes 500 W when connected to a 100 V line. If the line voltage becomes 150 V, the power consumed will be

An electric heating element consumes 300W when connected to a 100V line. If the line voltage becomes 150V, the power consumed will be-

An electric heater is designed to operate in 100V main with a power output of 1000W .When it is connected to a 25V source,power output is: