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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 ?

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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 ?

A).  8.5 A

B).  24 A

C).  10 A

D).  12 A


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Answered by on | Votes 0 |

 8.5 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.

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