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The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ?
Answer & Solution
Correct Answer:
Option
A
V = 60V and I = 4A
R = V/I
= 60/4
=15Ω
When potential difference is increased to 127.5 V
I = V/R
= 127.5/15
= 8.5 A
The current through the heater becomes 8.5 A.
R = V/I
= 60/4
=15Ω
When potential difference is increased to 127.5 V
I = V/R
= 127.5/15
= 8.5 A
The current through the heater becomes 8.5 A.
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