The potential difference between the terminals of an electric heater is 75V when it draws current of 5A from thesource.What current will the heater draw if the potential difference is increased to 150V?
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Answer: 10A
Explanation:
V=50V, I=4A
R= V/I =75/5 = 15 ohm
When potential difference is increased to 150 V
I= V/R =150/15
= 10A
The current through the heater becomes 10A
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